Sayer, M. (2014). Life: Elementary. Teacher's Book. A2 (Vietnam edtion.). Singapore: National Geographic Learning; Cengage Learning.
استشهاد بنمط شيكاغوSayer, Mike. Life: Elementary. Teacher's Book. A2. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2014.
MLA استشهادSayer, Mike. Life: Elementary. Teacher's Book. A2. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.