Schultes, R. E., & Hofmann, A. The botany and chemistry of hallucinogens.
Cita Chicago (17th ed.)Schultes, Richard Evans, i Albert Hofmann. The Botany and Chemistry of Hallucinogens.
Cita MLA (8th ed.)Schultes, Richard Evans, i Albert Hofmann. The Botany and Chemistry of Hallucinogens.
Atenció: Aquestes cites poden no estar 100% correctes.