Scarborough, J. The opium poppy in Hellenistic and Roman medicine: John Scarborough. Drugs and narcotics in history.(1996).
Cita Chicago (17th ed.)Scarborough, John. "The Opium Poppy in Hellenistic and Roman Medicine: John Scarborough." Drugs and Narcotics in History.(1996) .
Cita MLA (8th ed.)Scarborough, John. "The Opium Poppy in Hellenistic and Roman Medicine: John Scarborough." Drugs and Narcotics in History.(1996), .
Atenció: Aquestes cites poden no estar 100% correctes.