Dyfyniad APA
Kroschwitz, J. I., & Winokur, M. (1990). Chemistry: General, organic, biological (2nd ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Kroschwitz, Jacqueline I., and Melvin Winokur. Chemistry: General, Organic, Biological. 2nd ed. New York: McGraw-Hill, 1990.
Dyfyniad MLA
Kroschwitz, Jacqueline I., and Melvin Winokur. Chemistry: General, Organic, Biological. 2nd ed. McGraw-Hill, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.