APA (7th ed.) Citation

Barbour, A. G. (1974). Humphrey Bogart. Allen.

Chicago Style (17th ed.) Citation

Barbour, Alan G. Humphrey Bogart. London: Allen, 1974.

MLA (9th ed.) Citation

Barbour, Alan G. Humphrey Bogart. Allen, 1974.

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