APA (7th ed.) Citation

Leong, K., & Leong, E. (2016). Top the TOEFL: Unlocking the secrets of Ivy League students. WS Education. https://doi.org/10.1142/9526

Chicago Style (17th ed.) Citation

Leong, Kaiwen, and Elaine Leong. Top the TOEFL: Unlocking the Secrets of Ivy League Students. New Jersey ; London ; Singapore: WS Education, 2016. https://doi.org/10.1142/9526.

MLA (9th ed.) Citation

Leong, Kaiwen, and Elaine Leong. Top the TOEFL: Unlocking the Secrets of Ivy League Students. WS Education, 2016. https://doi.org/10.1142/9526.