1 "Wikipedia"
2 Na, Young-Min, "The introduction of the private investigation business outlook and response" 55-70, 2006
3 Na, Young-Min, "Settlement private research institutions and law enforcement agencies in the study on the relationship between" 2006
4 Jeong, Il-Seok, "Schemes to adopt the private investigation system to expand the realm of private security" Yong-In Unuversity 2008
5 Jeong, Seok-Hyeon, "Problems and Improvement Act of private investigation" Korea Institute of Private Special Administration 2007
6 Kim, Du-Hyeon, "Private security theory" baek-san publisher 2002
7 Jeong, Il-Seok, "Private investigation business management, and regulatory agencies on selected research" 21 : 2008
8 Kim, Dong-ki, "Plan to introduce a private investigation system for the development of Korean private security industry" Yong-In Unuversity 2011
9 "National Legal Information Center"
10 Son, Sang-Cheol, "Introduction to Private Investigation School" baek-san publisher 2005
1 "Wikipedia"
2 Na, Young-Min, "The introduction of the private investigation business outlook and response" 55-70, 2006
3 Na, Young-Min, "Settlement private research institutions and law enforcement agencies in the study on the relationship between" 2006
4 Jeong, Il-Seok, "Schemes to adopt the private investigation system to expand the realm of private security" Yong-In Unuversity 2008
5 Jeong, Seok-Hyeon, "Problems and Improvement Act of private investigation" Korea Institute of Private Special Administration 2007
6 Kim, Du-Hyeon, "Private security theory" baek-san publisher 2002
7 Jeong, Il-Seok, "Private investigation business management, and regulatory agencies on selected research" 21 : 2008
8 Kim, Dong-ki, "Plan to introduce a private investigation system for the development of Korean private security industry" Yong-In Unuversity 2011
9 "National Legal Information Center"
10 Son, Sang-Cheol, "Introduction to Private Investigation School" baek-san publisher 2005
11 Kim, Jong-Sik, "Introduction of private investigation and the need to understand their concerns and misconceptions about" 2012
12 Lee Yun-Geun, "Guard Instructor - private security theory" Expert 2001
13 Gang, Hyo-Eun, "Foreign legal practices and the use of private detectives investigated systems, April investigation studies"
14 Hwang, Jeong-Ik, "Certified Survey(Certified Investigator) study on the introduction of the system" Police Science Institute 2005
15 Gong, Do-Hwan, "A study on the requirement for private investigation service system, private investigator's roles and ange of work in South Korea" Graduate School of Law Major in Criminal Justice Yonsei University 2007
16 An, Dong Hyun, "A study on the ideal relationship between private investigators and related agencies" Graduate School of Public Administration Yonsei University 2007
17 Lee, Sang-Won, "A study on the Improvement of Private Investigators System in Korea" 14 : 2007
18 Kang, Young-sook, "A Study on the private investigator system in Japan" 8 : 327-357, 2006
19 Cho, Yong-Chul, "A Study on the Which Facilities will Assume Charge of Management for the Private Investigation Business" Korea Institute of Private Security 2006
20 Lee, Jin-Soo, "A Study on introduction task of private investigation system" Yong-In Unuversity 2011
21 Song, Bong-Gyu, "A Study on Introduction of the Private Investigator System in Korea" Dongguk University 2007
22 Lee, Min-Hyung, "A Study on Assuring the Effectiveness of Administrational Regulation and Supervision in Korea Private Security" 12 : 245-269, 2006