APA (7th ed.) Citation

Duffy, C. (1985). Frederick the Great: A military life. Routledge & Paul.

Chicago Style (17th ed.) Citation

Duffy, Christopher. Frederick the Great: A Military Life. London u.a: Routledge & Paul, 1985.

MLA (9th ed.) Citation

Duffy, Christopher. Frederick the Great: A Military Life. Routledge & Paul, 1985.

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