APA Style

Steketee, G., White, K. (1990). When Once is Not Enough (Help for Obsessive Compulsives) (Cet.1). California: New Harbinger Publications.

MLA Style

Steketee, Gail., White, Kerrin. "When Once is Not Enough (Help for Obsessive Compulsives)". Cet.1 California: New Harbinger Publications, 1990. Text.