Hughes, J., Dummett, P., & Stephenson, H. (2015). Life: Pre-intermediate. Student's book with online workbook. A2 - B1 (Vietnam edtion.). Singapore: National Geographic Learning; Cengage Learning.
استشهاد بنمط شيكاغوHughes, John, Paul Dummett, و Helen Stephenson. Life: Pre-intermediate. Student's Book With Online Workbook. A2 - B1. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2015.
MLA استشهادHughes, John, Paul Dummett, و Helen Stephenson. Life: Pre-intermediate. Student's Book With Online Workbook. A2 - B1. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.