Hardy-Gould, J., & Styring, J. (2011). English plus: Workbook 4 (1a. ed.). Oxford University Press.
Chicagoスタイル(17版)引用形式Hardy-Gould, Janet, , James Styring. English Plus: Workbook 4. 1a. ed. Oxford: Oxford University Press, 2011.
MLA(9版)引用形式Hardy-Gould, Janet, , James Styring. English Plus: Workbook 4. 1a. ed. Oxford University Press, 2011.
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