Emboden, W. (1979). Narcotic plants: Revised and enlarged. Collier Books.
Cita Chicago (17th ed.)Emboden, William. Narcotic Plants: Revised and Enlarged. Collier Books, 1979.
Cita MLA (9th ed.)Emboden, William. Narcotic Plants: Revised and Enlarged. Collier Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.