Dyfyniad APA

Kotz, J. C., & Purcell, K. F. (1991). Chemistry and chemical reactivity (2nd ed.). Saunders.

Dyfyniad Arddull Chicago

Kotz, John C., and Keith F. Purcell. Chemistry and Chemical Reactivity. 2nd ed. Philadelphia: Saunders, 1991.

Dyfyniad MLA

Kotz, John C., and Keith F. Purcell. Chemistry and Chemical Reactivity. 2nd ed. Saunders, 1991.

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