Costinett, S., & Byrd, D. R. H. (1993). Spectrum 2: A communicative course in English. Student book, 2A (1a. ed.). Regents.
Chicagoスタイル(17版)引用形式Costinett, Sandra, , Donald R. H. Byrd. Spectrum 2: A Communicative Course in English. Student Book, 2A. 1a. ed. Englewood Cliffs: Regents, 1993.
MLA(9版)引用形式Costinett, Sandra, , Donald R. H. Byrd. Spectrum 2: A Communicative Course in English. Student Book, 2A. 1a. ed. Regents, 1993.
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