USAID< USP USA. (1998). Study on priority and misused drugs.
Cita Chicago (17th ed.)USAID< USP USA. Study on Priority and Misused Drugs. 1998.
Cita MLA (8th ed.)USAID< USP USA. Study on Priority and Misused Drugs. 1998.
Atenció: Aquestes cites poden no estar 100% correctes.