APA-viite (7. p.)

Langan, J. (2002). English skills with readings (5th ed.). McGraw-Hill.

Chicago-viite (17. p.)

Langan, John. English Skills with Readings. 5th ed. Boston: McGraw-Hill, 2002.

MLA-viite (8. p.)

Langan, John. English Skills with Readings. 5th ed. McGraw-Hill, 2002.