APA-referens (7:e uppl.)

Sharpe, P. J. (1999). How to prepare for the TOEFL test: Test of English as a foreign language (10th ed.). Barron's Educational.

Chicago-referens (17:e uppl.)

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-referens (8:e uppl.)

Sharpe, Pamela J. How to Prepare for the TOEFL Test: Test of English as a Foreign Language. 10th ed. Barron's Educational, 1999.