Style de citation APA (7e éd.)

Langan, J. (2006). English skills (5th ed.). McGraw-Hill.

Style de citation Chicago (17e éd.)

Langan, John. English Skills. 5th ed. New York: McGraw-Hill, 2006.

Style de citation MLA (9e éd.)

Langan, John. English Skills. 5th ed. McGraw-Hill, 2006.