APA (7th ed.) Citation

Knowles, C. H. (1965). Simon de Montfort, 1265-1965. Historical Association.

Chicago Style (17th ed.) Citation

Knowles, Clive H. Simon De Montfort, 1265-1965. Lond.: Historical Association, 1965.

MLA (8th ed.) Citation

Knowles, Clive H. Simon De Montfort, 1265-1965. Historical Association, 1965.

Warning: These citations may not always be 100% accurate.