National Institute on Drug Abuse & Brown, B. S. (1987). Youth at high risk for substance abuse. DHHS publication.
Cita Chicago Style (17a ed.)National Institute on Drug Abuse y Barry S. Brown. "Youth at High Risk for Substance Abuse." DHHS Publication 1987.
Cita MLA (9a ed.)National Institute on Drug Abuse y Barry S. Brown. "Youth at High Risk for Substance Abuse." DHHS Publication, 1987.
Precaución: Estas citas no son 100% exactas.