APA (7. basım) Alıntı

Langan, J. (1985). English Skills (tercera edición.). McGraw-Hill Book Company.

Chicago Style (17. basım) Atıf

Langan, John. English Skills. tercera edición. New York: McGraw-Hill Book Company, 1985.

MLA (9th ed.) Atıf

Langan, John. English Skills. tercera edición. McGraw-Hill Book Company, 1985.