APA (7e ed.) Bronvermelding

Langan, J. (2001). Sentence skills with readings (second edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Langan, John. Sentence Skills with Readings. second edition. Boston: McGraw-Hill, 2001.

MLA (8e ed.) Bronvermelding

Langan, John. Sentence Skills with Readings. second edition. McGraw-Hill, 2001.