Cita APA (7a ed.)

Alexander, C. H. O. (1974). The Penguin book of chess positions ([1st published, reprinted].). Penguin Books.

Cita Chicago Style (17a ed.)

Alexander, C. H. O'D. The Penguin Book of Chess Positions. [1st published, reprinted]. Harmondsworth: Penguin Books, 1974.

Cita MLA (9a ed.)

Alexander, C. H. O'D. The Penguin Book of Chess Positions. [1st published, reprinted]. Penguin Books, 1974.