APA (7th ed.) Citation

Porter, R., & Porter, R. (1995). Drugs and narcotics in history. The University Press.

Chicago Style (17th ed.) Citation

Porter, Roy, and Roy;Teich Porter. Drugs and Narcotics in History. The University Press, 1995.

MLA (9th ed.) Citation

Porter, Roy, and Roy;Teich Porter. Drugs and Narcotics in History. The University Press, 1995.

Warning: These citations may not always be 100% accurate.