APA Citation

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

Chicago Style Citation

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

MLA Citation

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

Warning: These citations may not always be 100% accurate.