APA (7th ed.) Citation

Keene & Levy. (1974). How to play the opening in ches. Collins.

Chicago Style (17th ed.) Citation

Keene and Levy. How to Play the Opening in Ches. London: Collins, 1974.

MLA (8th ed.) Citation

Keene and Levy. How to Play the Opening in Ches. Collins, 1974.

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