Cita APA

Gruber, G. R., & Gruber, E. C. (1981). Test of english as a foreign languaje TOEFL (Ed. rev.). New York, New York: Monarch Press.

Citación estilo Chicago

Gruber, Gary R., y Edward C. Gruber. Test of English As a Foreign Languaje TOEFL. Ed. rev. New York, New York: Monarch Press, 1981.

Cita MLA

Gruber, Gary R., y Edward C. Gruber. Test of English As a Foreign Languaje TOEFL. Ed. rev. New York, New York: Monarch Press, 1981.