1 "Western Views of Islam in the Middle Ages" 1962
2 "War in Medieval Society" 1337-99, 1974
3 "The Salvation of the Heathen the Exploration of a Theme in Piers Plowman Journal of the Warburg and Courtauld Institute 29" 101-16, 1966
4 "The Political Meaning of Chaucer's Tale of Melibee" 433-44, 1944
5 "The Impeachment of Bishop Despense" 38 : 127-48, 1965
6 "The Decline of the Crusading Idea" 1955
7 "The Date of the A-Text of Piers Plowman" 566-58 72, 1943
8 "The Crusade in the Later Middle Ages" Methuen 1938
9 "The Crusade in the Fourteenth Century Europe in the Late Middle Ages" 1965
10 "The Censured Opinions of Uthred of Bolden Proceedings of the British Academy 37" 305-42, 1951
1 "Western Views of Islam in the Middle Ages" 1962
2 "War in Medieval Society" 1337-99, 1974
3 "The Salvation of the Heathen the Exploration of a Theme in Piers Plowman Journal of the Warburg and Courtauld Institute 29" 101-16, 1966
4 "The Political Meaning of Chaucer's Tale of Melibee" 433-44, 1944
5 "The Impeachment of Bishop Despense" 38 : 127-48, 1965
6 "The Decline of the Crusading Idea" 1955
7 "The Date of the A-Text of Piers Plowman" 566-58 72, 1943
8 "The Crusade in the Later Middle Ages" Methuen 1938
9 "The Crusade in the Fourteenth Century Europe in the Late Middle Ages" 1965
10 "The Censured Opinions of Uthred of Bolden Proceedings of the British Academy 37" 305-42, 1951
11 "The Allegory of Love" Oxford UP 1958
12 "The A-Text of Piers Plowman and the Norman Wars" 54 : 37-76, 1939
13 "Selected Proceedings of the Third Congress of the International Courtly Literature Society" 1981
14 "Saint Augustine's View of the Just War Studies in Church History 20" 1-13, 1983
15 "On the Pacifism of Chaucer and Gower Studies in the Ages of Chaucer 9" 97-121, 1987
16 "Medieval Readers and Writers 1350-1400" Columbia UP 1981
17 "Love and Hate in Medieval Warfare The Contribution of Saint Augustine" 108-24, 1987
18 "Letter to King Richard II" 1975
19 "Gower and the Pearl Poet on the Subject of Aristocracy Studies in Medieval Literature U of Pennsylvania P" 1961
20 "Erkenwald in Its Legendary Context" 303-61 63, 1986
21 "England and France at War" 1300-, 1988
22 "Criticism of the Crusade A Study of Public Opinion and Crusade Propaganda" Porcupine Press 1975
23 "Criticism of Crusading in Fourteenth-Century England" University College Cardiff P 1985
24 "Commentator of the Sentences A Study in Theological Orthodoxy" 1963
25 "Catholic U of America P" 1962-,
26 "Augustine" Columbia UP 1963
27 ".Justice and Mercy in Piers Plowman:A Reading of the B Text Visio" Croom Helm 1984
28 ".Chaucer's Knight:The Portrait of a Medieval Mercenary" Louisiana State UP 1980