Cita APA

B Howard & Howard B Suprague. (1959). Grasslands. American association for the advancment of science.

Chicago Edition Citation

B Howard i Howard B Suprague. Grasslands. American association for the advancment of science, 1959.

Cita MLA

B Howard i Howard B Suprague. Grasslands. American association for the advancment of science, 1959.

Atenció: Aquestes cites poden no estar 100% correctes.