PHILLIPS, D. (1990). Longman practice test for the TOEFL. Longman Publisher.
Chicagoスタイル(17版)引用形式PHILLIPS, Deborah. Longman Practice Test for the TOEFL. Singapore: Longman Publisher, 1990.
MLA(9版)引用形式PHILLIPS, Deborah. Longman Practice Test for the TOEFL. Longman Publisher, 1990.
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