Robert C. Lugton. (1986). American topics: A reading-vocabulary text for speakers of English as a second language. New York: Prentice-Hall Regent.
シカゴスタイル引用形Robert C. Lugton. American Topics: A Reading-vocabulary Text for Speakers of English As a Second Language. New York: Prentice-Hall Regent, 1986.
MLA引用形式Robert C. Lugton. American Topics: A Reading-vocabulary Text for Speakers of English As a Second Language. New York: Prentice-Hall Regent, 1986.
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