APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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