Cita APA (7th ed.)
Krueger, H., Eddy, N. B., & Sumwalt, M. (1941). The Pharmacology of the opium alkaloids. U.S.Publ. Health Service.
Cita Chicago (17th ed.)
Krueger, Hugo, Nathan B. Eddy, i Margaret Sumwalt. The Pharmacology of the Opium Alkaloids. Washington: U.S.Publ. Health Service, 1941.
Cita MLA (9th ed.)
Krueger, Hugo, et al. The Pharmacology of the Opium Alkaloids. U.S.Publ. Health Service, 1941.
Atenció: Aquestes cites poden no estar 100% correctes.