Dyfyniad APA

NAMOWITZ, S. N. (1981). Earth Science To Accompany Earth Science Samuel N. Namowitz. DC.Heath and Company.

Dyfyniad Arddull Chicago

NAMOWITZ, Samuel N. Earth Science To Accompany Earth Science Samuel N. Namowitz. DC.Heath and Company, 1981.

Dyfyniad MLA

NAMOWITZ, Samuel N. Earth Science To Accompany Earth Science Samuel N. Namowitz. DC.Heath and Company, 1981.

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