Dyfyniad APA

Hein, M. (1977). Foundations of college chemistry (4th ed.). Brooks/Cole.

Dyfyniad Arddull Chicago

Hein, Morris. Foundations of College Chemistry. 4th ed. Monterey: Brooks/Cole, 1977.

Dyfyniad MLA

Hein, Morris. Foundations of College Chemistry. 4th ed. Brooks/Cole, 1977.

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