Dyfyniad APA

Iyes, J. D., & Barry, R. G. (1974). Arctic and Alphine environments. Methuen.

Dyfyniad Arddull Chicago

Iyes, Jack D., and Roger G. Barry. Arctic and Alphine Environments. London: Methuen, 1974.

Dyfyniad MLA

Iyes, Jack D., and Roger G. Barry. Arctic and Alphine Environments. Methuen, 1974.

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