Cita APA (7th ed.)
FALCK, R., & ET AL. (1996). INJECTION DRUG USERS, CRACK SMOKERS, AND THE USE OF HUMAN SERVICES.
Cita Chicago (17th ed.)
FALCK, R.S, i ET AL. INJECTION DRUG USERS, CRACK SMOKERS, AND THE USE OF HUMAN SERVICES. 1996.
Cita MLA (9th ed.)
FALCK, R.S, i ET AL. INJECTION DRUG USERS, CRACK SMOKERS, AND THE USE OF HUMAN SERVICES. 1996.
Atenció: Aquestes cites poden no estar 100% correctes.