Sharpe, P. J. (1999). How to prepare for the TOEFL test: Test of English as a foreign language (10th ed.). Barron's Educational.
芝加哥风格引文Sharpe, Pamela J. How to Prepare for the TOEFL Test: Test of English as a Foreign Language. 10th ed. Hauppauge, NY: Barron's Educational, 1999.
MLA引文Sharpe, Pamela J. How to Prepare for the TOEFL Test: Test of English as a Foreign Language. 10th ed. Barron's Educational, 1999.
警告：这些引文格式不一定是100％准确.