APA (7th ed.) Zitazioa

O'CONNOR, F. (1967). Better english pronunciation. C.U.O..

Chicago Style (17th ed.) Zitazioa

O'CONNOR, F.D. Better English Pronunciation. London: C.U.O., 1967.

MLA (9th ed.) Zitazioa

O'CONNOR, F.D. Better English Pronunciation. C.U.O., 1967.