Hughes, J., Dummett, P., & Stephenson, H. (2015). Life: Elementary. Student's Book with Online Workbook . A1 - A2 (Vietnam edtion.). Singapore: National Geographic Learning; Cengage Learning.
Trích dẫn kiểu ChicagoHughes, John, Paul Dummett, và Helen Stephenson. Life: Elementary. Student's Book With Online Workbook . A1 - A2. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2015.
MLA引文Hughes, John, Paul Dummett, và Helen Stephenson. Life: Elementary. Student's Book With Online Workbook . A1 - A2. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2015.
警告：这些引文格式不一定是100％准确.