Frankel, I., & Irene Frankel; Victoria Kimbrough. (1998). Gateways: Integrated english. New York, NY, USA: Oxford University Press.
Παραπομπή Chicago StyleFrankel, Irene, και Irene Frankel; Victoria Kimbrough. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.
Παραπομπή MLAFrankel, Irene, και Irene Frankel; Victoria Kimbrough. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.
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