Sharpe, P. J. (1994). How to prepare for the TOEFL: Test of English as a foreign language (7. edition.). Hauppauge, New York: Barron's Educational Series.
Citación estilo ChicagoSharpe, Pamela J. How to Prepare for the TOEFL: Test of English As a Foreign Language. 7. edition. Hauppauge, New York: Barron's Educational Series, 1994.
Cita MLASharpe, Pamela J. How to Prepare for the TOEFL: Test of English As a Foreign Language. 7. edition. Hauppauge, New York: Barron's Educational Series, 1994.
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