Cita APA (7a ed.)

Steketee, G., & White, K. (1990). When once is not enough: Help for obsessive compulsives. New Harbinger.

Cita Chicago Style (17a ed.)

Steketee, Gail, y Kerrin White. When Once Is Not Enough: Help for Obsessive Compulsives. Oakland, California: New Harbinger, 1990.

Cita MLA (9a ed.)

Steketee, Gail, y Kerrin White. When Once Is Not Enough: Help for Obsessive Compulsives. New Harbinger, 1990.