Cita APA (7th ed.)

Emboden, W. A. (1979). Narcotic plants. Macmillan.

Cita Chicago (17th ed.)

Emboden, William A. Narcotic Plants. New York: Macmillan, 1979.

Cita MLA (9th ed.)

Emboden, William A. Narcotic Plants. Macmillan, 1979.