Cita APA

Gordon, M. J., & Gordon, M. J. (1974). Speech improvement ([1. edition].). Englewood Cliffs, N.J.: Prentice Hall.

Citación estilo Chicago

Gordon, Morton J., y Morton J. Gordon. Speech Improvement. [1. edition]. Englewood Cliffs, N.J.: Prentice Hall, 1974.

Cita MLA

Gordon, Morton J., y Morton J. Gordon. Speech Improvement. [1. edition]. Englewood Cliffs, N.J.: Prentice Hall, 1974.