Cita APA (7th ed.)
JOHNSON, M., & ET AL. (1999). RELIABILITY OF DRUG USERS' SELF-REPORT OF ECONOMIC VARIABLES.
Cita Chicago (17th ed.)
JOHNSON, M.E, i ET AL. RELIABILITY OF DRUG USERS' SELF-REPORT OF ECONOMIC VARIABLES. 1999.
Cita MLA (9th ed.)
JOHNSON, M.E, i ET AL. RELIABILITY OF DRUG USERS' SELF-REPORT OF ECONOMIC VARIABLES. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.