Cita APA

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

Chicago Style Citation

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

Cita MLA

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