Trease, G. E., & Evans, W. C. Farmacognosia (2a ed.).
Cita Chicago (17th ed.)Trease, George Edward, i William Charles Evans. Farmacognosia. 2a ed.
Cita MLA (8th ed.)Trease, George Edward, i William Charles Evans. Farmacognosia. 2a ed.
Atenció: Aquestes cites poden no estar 100% correctes.