APA (7th ed.) Citation

Harkel, R. L. (1969). Picture book of sexual love. Cybertype Corp..

Chicago Style (17th ed.) Citation

Harkel, Robert L. Picture Book of Sexual Love. New York: Cybertype Corp., 1969.

MLA (8th ed.) Citation

Harkel, Robert L. Picture Book of Sexual Love. Cybertype Corp., 1969.

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