APA (7th ed.) Citation

Langan, J. (2008). English skills (9th ed.). McGraw-Hill Higher Education.

Chicago Style (17th ed.) Citation

Langan, John. English Skills. 9th ed. Boston: McGraw-Hill Higher Education, 2008.

MLA (9th ed.) Citation

Langan, John. English Skills. 9th ed. McGraw-Hill Higher Education, 2008.