Cita APA

Johannsen, K. L. (2010). World english 1 workbook: Real people, real places, real lenguage. Boston: National Geographic Learning ; Cengage Learning.

Citación estilo Chicago

Johannsen, Kristin L. World English 1 Workbook: Real People, Real Places, Real Lenguage. Boston: National Geographic Learning ; Cengage Learning, 2010.

Cita MLA

Johannsen, Kristin L. World English 1 Workbook: Real People, Real Places, Real Lenguage. Boston: National Geographic Learning ; Cengage Learning, 2010.