APA citiranje

Solórzano, H. S. (2006). NorthStar: Building skills for the TOEFL IBT : High intermediate. New York: Pearson Longman.

Trích dẫn kiểu Chicago

Solórzano, Helen S. NorthStar: Building Skills for the TOEFL IBT : High Intermediate. New York: Pearson Longman, 2006.

MLA citiranje

Solórzano, Helen S. NorthStar: Building Skills for the TOEFL IBT : High Intermediate. New York: Pearson Longman, 2006.

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