Cita APA

Wardhaugh, R., & Wardhaugh, R. (1977). Introduction to linguistics (2. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Wardhaugh, Ronald, y Ronald Wardhaugh. Introduction to Linguistics. 2. edition. New York, New York: McGraw-Hill, 1977.

Cita MLA

Wardhaugh, Ronald, y Ronald Wardhaugh. Introduction to Linguistics. 2. edition. New York, New York: McGraw-Hill, 1977.