APA (7e ed.) Bronvermelding

Allen, J. P. B., & Widdowson, H. G. (1978). English in social studies (Student's [ed.].). Oxford University Press.

Chicago (17e ed.) Bronvermelding

Allen, J. P. B., en H. G. Widdowson. English in Social Studies. Student's [ed.]. Oxford: Oxford University Press, 1978.

MLA (8e ed.) Bronvermelding

Allen, J. P. B., en H. G. Widdowson. English in Social Studies. Student's [ed.]. Oxford University Press, 1978.