Cita APA

Gruber, G. R., & Gruber, E. C. (1982). Test of English as a foreign language (TOEFL) Monarch Press.

Citación estilo Chicago

Gruber, Gary R., and Edward C. Gruber. Test of English As a Foreign Language (TOEFL). Rev. ed. New York, N.Y.: Monarch Press, 1982.

Cita MLA

Gruber, Gary R., and Edward C. Gruber. Test of English As a Foreign Language (TOEFL). Rev. ed. New York, N.Y.: Monarch Press, 1982.