APA (7e ed.) Bronvermelding

kelly, R. (1971). The use of English for Technical students. The English language book society.

Chicago (17e ed.) Bronvermelding

kelly, R. The Use of English for Technical Students. NULL: The English language book society, 1971.

MLA (9e ed.) Bronvermelding

kelly, R. The Use of English for Technical Students. The English language book society, 1971.