APA (7th ed.) Zitazioa

Chapman, L. (1967). English grammar and exercises: Book Four: For secondary classes. Longman.

Chicago Style (17th ed.) Zitazioa

Chapman, L.R.H. English Grammar and Exercises: Book Four: For Secondary Classes. London: Longman, 1967.

MLA (9th ed.) Zitazioa

Chapman, L.R.H. English Grammar and Exercises: Book Four: For Secondary Classes. Longman, 1967.