APA-viite (7. p.)

Scarborough, J. The opium poppy in Hellenistic and Roman medicine: John Scarborough. Drugs and narcotics in history.(1996).

Chicago-viite (17. p.)

Scarborough, John. "The Opium Poppy in Hellenistic and Roman Medicine: John Scarborough." Drugs and Narcotics in History.(1996) .

MLA-viite (8. p.)

Scarborough, John. "The Opium Poppy in Hellenistic and Roman Medicine: John Scarborough." Drugs and Narcotics in History.(1996), .