APA (7th ed.) Zitazioa

BUTTLE, J. (1981). Chemistry, a unified approach. Butterworths.

Chicago Style (17th ed.) Zitazioa

BUTTLE, J.W. Chemistry, a Unified Approach. London: Butterworths, 1981.

MLA (9th ed.) Zitazioa

BUTTLE, J.W. Chemistry, a Unified Approach. Butterworths, 1981.