Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.