Cita APA

Hill, D. A. (2013). Life: Pre-Intermediate. Teacher's Book . B1 (Vietnam edtion.). Singapore: National Geographic Learning; Cengage Learning.

Citación estilo Chicago

Hill, David A. Life: Pre-Intermediate. Teacher's Book . B1. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2013.

Cita MLA

Hill, David A. Life: Pre-Intermediate. Teacher's Book . B1. Vietnam edtion. Singapore: National Geographic Learning; Cengage Learning, 2013.