Dyfyniad APA

Siever, R. (1988). Sand. Scientific American Library Distributed by W.H. Freeman.

Dyfyniad Arddull Chicago

Siever, Raymond. Sand. New York: Scientific American Library Distributed by W.H. Freeman, 1988.

Dyfyniad MLA

Siever, Raymond. Sand. Scientific American Library Distributed by W.H. Freeman, 1988.

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