Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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