APA citiranje

 Stephenson, H. (2024). Life A2- B1: Student's book.  National geographic learning.

Trích dẫn kiểu Chicago

 Stephenson, Helen. Life A2- B1: Student's Book.  National geographic learning, 2024.

MLA citiranje

 Stephenson, Helen. Life A2- B1: Student's Book.  National geographic learning, 2024.

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