Cartmell, E., & Fowles, G. W. A. (1977). Valency and molecular structure (4th ed.). Butterworths.
Chicago Style (17th ed.) ZitazioaCartmell, E., eta G. W. A. Fowles. Valency and Molecular Structure. 4th ed. London: Butterworths, 1977.
MLA (9th ed.) ZitazioaCartmell, E., eta G. W. A. Fowles. Valency and Molecular Structure. 4th ed. Butterworths, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.