APA (7th ed.) Citation

Cartmell, E., & Fowles, G. W. A. (1966). Valency and molecular structure (3rd ed.). Butterworths.

Chicago Style (17th ed.) Citation

Cartmell, E., and G. W. A. Fowles. Valency and Molecular Structure. 3rd ed. London: Butterworths, 1966.

MLA (9th ed.) Citation

Cartmell, E., and G. W. A. Fowles. Valency and Molecular Structure. 3rd ed. Butterworths, 1966.