Gear, J., & Gear, R. (2002). Cambridge Preparation for the TOEFL Test (Tercera edición.). Cambridge University Press.
Chicago Style (17. basım) AtıfGear, Jolene, ve Robert Gear. Cambridge Preparation for the TOEFL Test. Tercera edición. Cambridge: Cambridge University Press, 2002.
MLA (9th ed.) AtıfGear, Jolene, ve Robert Gear. Cambridge Preparation for the TOEFL Test. Tercera edición. Cambridge University Press, 2002.
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