APA (7th ed.) Citation

Blackham, H. J. (1968). Humanism / by H.J. Blackham. Penguin.

Chicago Style (17th ed.) Citation

Blackham, H. J. Humanism / by H.J. Blackham. Penguin, 1968.

MLA (9th ed.) Citation

Blackham, H. J. Humanism / by H.J. Blackham. Penguin, 1968.

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