Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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