Citazione Stile APA (7a Edizione)

Close, R. A. (1964). The new English grammar: Lessons in English as a foreign language. Harvard University Press.

Citazione stile Chigago Style (17a edizione)

Close, R. A. The New English Grammar: Lessons in English as a Foreign Language. Cambridge: Harvard University Press, 1964.

Citatione MLA (9a ed.)

Close, R. A. The New English Grammar: Lessons in English as a Foreign Language. Harvard University Press, 1964.