Emboden, W. A. (1979). Narcotic plants. Macmillan.
Lua i Stíl Chicago (17ú heag.)Emboden, William A. Narcotic Plants. New York: Macmillan, 1979.
Lua MLA (9ú heag.)Emboden, William A. Narcotic Plants. Macmillan, 1979.
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