APA (7th ed.) Citation

Engel, R. (1989). Sex education: The final plague. Human Life International.

Chicago Style (17th ed.) Citation

Engel, Randy. Sex Education: The Final Plague. Gaithersburg, Md: Human Life International, 1989.

MLA (9th ed.) Citation

Engel, Randy. Sex Education: The Final Plague. Human Life International, 1989.