APA (7th ed.) Zitazioa

(1979). Reference books for small and medium-sized: Libraries. American library Association.

Chicago Style (17th ed.) Zitazioa

Reference Books for Small and Medium-sized: Libraries. Chicago: American library Association, 1979.

MLA (9th ed.) Zitazioa

Reference Books for Small and Medium-sized: Libraries. American library Association, 1979.