APA (7th ed.) Zitazioa

DAY, J. (1968). An advanced English practice Course. Longman.

Chicago Style (17th ed.) Zitazioa

DAY, James. An Advanced English Practice Course. London: Longman, 1968.

MLA (9th ed.) Zitazioa

DAY, James. An Advanced English Practice Course. Longman, 1968.