Cita APA

Gruber, G. R., & Gruber, E. C. (1983). Test of English as a Foreing Language, TOEFL (Rev. edition --.). New York, New York: Monarch Press.

Citación estilo Chicago

Gruber, Gary R., y Edward C. Gruber. Test of English As a Foreing Language, TOEFL. Rev. edition --. New York, New York: Monarch Press, 1983.

Cita MLA

Gruber, Gary R., y Edward C. Gruber. Test of English As a Foreing Language, TOEFL. Rev. edition --. New York, New York: Monarch Press, 1983.