APA (7th ed.) Zitazioa

COULSON, C. (1961). Valence. O,U,P..

Chicago Style (17th ed.) Zitazioa

COULSON, C.A. Valence. London: O,U,P., 1961.

MLA (9th ed.) Zitazioa

COULSON, C.A. Valence. O,U,P., 1961.