Dyfyniad APA
Russell, J. B. (1992). General chemistry (2nd.ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Russell, John B. General Chemistry. 2nd.ed. New York: McGraw-Hill, 1992.
Dyfyniad MLA
Russell, John B. General Chemistry. 2nd.ed. McGraw-Hill, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.