APA Citation

Humphrey, H. H. (1964). The Cause is Mankind. United states of America.

Chicago Style Citation

Humphrey, Hubert H. The Cause Is Mankind. United states of America, 1964.

MLA Citation

Humphrey, Hubert H. The Cause Is Mankind. United states of America, 1964.

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