Cita APA (7a ed.)

Harkness, K. (1956). The official blue book and encyclopedia of chess. David MacKay.

Cita Chicago Style (17a ed.)

Harkness, Kenneth. The Official Blue Book and Encyclopedia of Chess. New York: David MacKay, 1956.

Cita MLA (9a ed.)

Harkness, Kenneth. The Official Blue Book and Encyclopedia of Chess. David MacKay, 1956.