APA Alıntı

Langan, J., & John Langan. (1985). English skills. New York: McGraw-Hill.

Chicago Stili Alıntı

Langan, John, ve John Langan. English Skills. New York: McGraw-Hill, 1985.

MLA Alıntı

Langan, John, ve John Langan. English Skills. New York: McGraw-Hill, 1985.