Hughes, J., & Stephenson, H. (2015). Life A1-A2: Student's book with online workbook. Singapore: National Geographic Learning.
Trích dẫn kiểu ChicagoHughes, John, và Helen Stephenson. Life A1-A2: Student's Book With Online Workbook. Singapore: National Geographic Learning, 2015.
MLA CitationHughes, John, và Helen Stephenson. Life A1-A2: Student's Book With Online Workbook. Singapore: National Geographic Learning, 2015.
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