Cita APA (7a ed.)

(1960). Publishers' International Year Book: World Directory of Book Publishers. Alexander P. Wales.

Cita Chicago Style (17a ed.)

Publishers' International Year Book: World Directory of Book Publishers. London: Alexander P. Wales, 1960.

Cita MLA (9a ed.)

Publishers' International Year Book: World Directory of Book Publishers. Alexander P. Wales, 1960.