Litt, S. (2018). Cracking the TOEFL iBT (2018 edition.). Princeton Review.
Chicago Style (17th ed.) CitationLitt, Sarah. Cracking the TOEFL IBT. 2018 edition. New York: Princeton Review, 2018.
MLA (9th ed.) CitationLitt, Sarah. Cracking the TOEFL IBT. 2018 edition. Princeton Review, 2018.
Warning: These citations may not always be 100% accurate.