APA引文

Hughes, J., & Stephenson, H. (2016). Life A2-B1: Student's book with online workbook. Singapore: National Geographic Learning.

Trích dẫn kiểu Chicago

Hughes, John, và Helen Stephenson. Life A2-B1: Student's Book With Online Workbook. Singapore: National Geographic Learning, 2016.

MLA引文

Hughes, John, và Helen Stephenson. Life A2-B1: Student's Book With Online Workbook. Singapore: National Geographic Learning, 2016.

警告：这些引文格式不一定是100％准确.