Dyfyniad APA

Benchley, N. (1972). Only earth and sky last forever ([1st ed.].). Harper & Row.

Dyfyniad Arddull Chicago

Benchley, Nathaniel. Only Earth and Sky Last Forever. [1st ed.]. New York: Harper & Row, 1972.

Dyfyniad MLA

Benchley, Nathaniel. Only Earth and Sky Last Forever. [1st ed.]. Harper & Row, 1972.

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