APA (7th ed.) Zitazioa

COULSON, C. A. (1979). Valence. U, P..

Chicago Style (17th ed.) Zitazioa

COULSON, Charles Alfred. Valence. Oxford: U, P., 1979.

MLA (9th ed.) Zitazioa

COULSON, Charles Alfred. Valence. U, P., 1979.