Cita APA (7a ed.)
SPOTTS, D., & ET AL. STRATEGIES FOR FOLLOW-UP OF DRUG USERS: FIELD RESEARCH GUIDELINES.
Cita Chicago Style (17a ed.)
SPOTTS, D., y ET AL. STRATEGIES FOR FOLLOW-UP OF DRUG USERS: FIELD RESEARCH GUIDELINES.
Cita MLA (9a ed.)
SPOTTS, D., y ET AL. STRATEGIES FOR FOLLOW-UP OF DRUG USERS: FIELD RESEARCH GUIDELINES.
Precaución: Estas citas no son 100% exactas.