Sharpe, P. J. (2006). Barron's practice exercises for the TOEFL: Test of English as a foreign language (5th. ed.). Tp.HCM: Nxb. Trẻ.
استشهاد بنمط شيكاغوSharpe, Pamela J. Barron's Practice Exercises for the TOEFL: Test of English As a Foreign Language. 5th. ed. Tp.HCM: Nxb. Trẻ, 2006.
MLA استشهادSharpe, Pamela J. Barron's Practice Exercises for the TOEFL: Test of English As a Foreign Language. 5th. ed. Tp.HCM: Nxb. Trẻ, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.