Dyfyniad APA

Howe, H. F., & Westley , L. C. (1988). Ecological relationships of plants and animals. OUP.

Dyfyniad Arddull Chicago

Howe, Henry F., and Lynn C. Westley. Ecological Relationships of Plants and Animals. New York: OUP, 1988.

Dyfyniad MLA

Howe, Henry F., and Lynn C. Westley. Ecological Relationships of Plants and Animals. OUP, 1988.

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