Citazione Stile APA (7a Edizione)

Trease, G. E. (1978). Pharmacognosy (11th.). New York.

Citazione stile Chigago Style (17a edizione)

Trease, George Edward. Pharmacognosy. 11th. cassel & collier macmillan publisher Ltd: New York, 1978.

Citatione MLA (9a ed.)

Trease, George Edward. Pharmacognosy. 11th. New York, 1978.