Dyfyniad APA

Cartmell, E., & Fowles, G. W. A. (1977). Valency and molecular structure (4th ed.). Butterworths.

Dyfyniad Arddull Chicago

Cartmell, E., and G. W. A. Fowles. Valency and Molecular Structure. 4th ed. London: Butterworths, 1977.

Dyfyniad MLA

Cartmell, E., and G. W. A. Fowles. Valency and Molecular Structure. 4th ed. Butterworths, 1977.

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