Trease, G. E., & By Evans , W. C. (1971). Pharmacognosy (10th ed.). Bailliere Tindall.
Cita Chicago (17th ed.)Trease, George Edward, i William Charles By Evans. Pharmacognosy. 10th ed. London: Bailliere Tindall, 1971.
Cita MLA (9th ed.)Trease, George Edward, i William Charles By Evans. Pharmacognosy. 10th ed. Bailliere Tindall, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.