Phillips, d. (2006). Longman preparation course for the toefl test: IBT. Pearson Education.
Lua i Stíl Chicago (17ú heag.)Phillips, deborah. Longman Preparation Course for the Toefl Test: IBT. Pearson Education, 2006.
Lua MLA (9ú heag.)Phillips, deborah. Longman Preparation Course for the Toefl Test: IBT. Pearson Education, 2006.
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