Cita APA (7th ed.)

Langan, J. (1988). English skills with readings (3rd ed.). McGraw hill.

Cita Chicago (17th ed.)

Langan, John. English Skills with Readings. 3rd ed. New York: McGraw hill, 1988.

Cita MLA (9th ed.)

Langan, John. English Skills with Readings. 3rd ed. McGraw hill, 1988.