Merdinger, P., & Barton, L. Northstar: Listening and speaking (2a ed.).
Chicagoスタイル(17版)引用形式Merdinger, Polly, , Laurie Barton. Northstar: Listening and Speaking. 2a ed.
MLA(8版)引用形式Merdinger, Polly, , Laurie Barton. Northstar: Listening and Speaking. 2a ed.
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