Παραπομπή σε μορφή APA (7η εκδ.)

Sharpe Pamela J. (1999). How to prepare for the TOEFL test: Test of English as a foreign language (9th ed.). Barron's.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sharpe Pamela J. How to Prepare for the TOEFL Test: Test of English as a Foreign Language. 9th ed. Barron's, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Sharpe Pamela J. How to Prepare for the TOEFL Test: Test of English as a Foreign Language. 9th ed. Barron's, 1999.