Cita APA (7th ed.)

Peterson's. (1998). Peterson's TOEFL success 1999: Boost your test scores! (3rd ed.). Peterson's Guides.

Cita Chicago (17th ed.)

Peterson's. Peterson's TOEFL Success 1999: Boost Your Test Scores! 3rd ed. Princeton, N.J.: Peterson's Guides, 1998.

Cita MLA (9th ed.)

Peterson's. Peterson's TOEFL Success 1999: Boost Your Test Scores! 3rd ed. Peterson's Guides, 1998.