APA ציטוט

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

Chicago Edition Citation

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

ציטוט MLA

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