Dyfyniad APA

Metcalfe, H. C., Williams, J. E., & Castka, J. F. (1974). Modern chemistry. Holt, Rinehart and Winston.

Dyfyniad Arddull Chicago

Metcalfe, H. Clark, John E. Williams, and Joseph F. Castka. Modern Chemistry. New York: Holt, Rinehart and Winston, 1974.

Dyfyniad MLA

Metcalfe, H. Clark, et al. Modern Chemistry. Holt, Rinehart and Winston, 1974.

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