Dyfyniad APA

Fairbridge, R. W. (1972). encyclopaedia of geochemistry and environmental sciences. Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Fairbridge, Rhodes W. Encyclopaedia of Geochemistry and Environmental Sciences. New York: Van Nostrand Reinhold Company, 1972.

Dyfyniad MLA

Fairbridge, Rhodes W. Encyclopaedia of Geochemistry and Environmental Sciences. Van Nostrand Reinhold Company, 1972.

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