Dyfyniad APA

Delobeau, F. (1971). Environment of the earth, tr. from French by Janet Rountree Lesh. D-Reidel.

Dyfyniad Arddull Chicago

Delobeau, Francis. Environment of the Earth, Tr. from French by Janet Rountree Lesh. Holland: D-Reidel, 1971.

Dyfyniad MLA

Delobeau, Francis. Environment of the Earth, Tr. from French by Janet Rountree Lesh. D-Reidel, 1971.

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