Cita APA

Gathercoal, E. N. n. 1., & Wirth, E. H. 1. (1959). Pharmacognosy (3. edition thoroughly rev. by Edward P. Claus.). Philadelphia: Lea & Febiger.

Citación estilo Chicago

Gathercoal, Edmund Norris n. 1874, y Elmer Hauser 1895-1947 Wirth. Pharmacognosy. 3. edition thoroughly rev. by Edward P. Claus. Philadelphia: Lea & Febiger, 1959.

Cita MLA

Gathercoal, Edmund Norris n. 1874, y Elmer Hauser 1895-1947 Wirth. Pharmacognosy. 3. edition thoroughly rev. by Edward P. Claus. Philadelphia: Lea & Febiger, 1959.