Gear, J., & Gear, R. (2002). Cambridge preparation for the TOEFL test (3rd ed.). Cambridge University Press.

Gear, Jolene, and Robert Gear. Cambridge Preparation for the TOEFL Test. 3rd ed. Cambridge, UK ; New York. N.Y., USA: Cambridge University Press, 2002.

Gear, Jolene, and Robert Gear. Cambridge Preparation for the TOEFL Test. 3rd ed. Cambridge University Press, 2002.