Frankel, I., & Irene Frankel. (1998). Gateways: Integrated english. New York, NY, USA: Oxford University Press.
シカゴスタイル引用形Frankel, Irene, , Irene Frankel. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.
MLA引用形式Frankel, Irene, , Irene Frankel. Gateways: Integrated English. New York, NY, USA: Oxford University Press, 1998.
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