Cita APA (7th ed.)
HIGGINS, P., & ET AL. (1996). CHANGES IN HEALTH BEHAVIORS MADE BY PREGNANT SUBSTANCE USERS.
Cita Chicago (17th ed.)
HIGGINS, P.G, i ET AL. CHANGES IN HEALTH BEHAVIORS MADE BY PREGNANT SUBSTANCE USERS. 1996.
Cita MLA (9th ed.)
HIGGINS, P.G, i ET AL. CHANGES IN HEALTH BEHAVIORS MADE BY PREGNANT SUBSTANCE USERS. 1996.
Atenció: Aquestes cites poden no estar 100% correctes.