Citazione Stile APA (7a Edizione)

Gear, J., & Gear, R. (2007). Cambridge preparation for the TOEFL test (4th ed.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Gear, Jolene, e Robert Gear. Cambridge Preparation for the TOEFL Test. 4th ed. Cambridge ; New York ; New Delhi: Cambridge University Press, 2007.

Citatione MLA (8a ed.)

Gear, Jolene, e Robert Gear. Cambridge Preparation for the TOEFL Test. 4th ed. Cambridge University Press, 2007.