APA (7th ed.) Citation

Cuervo Ballén Víctor Manuel, Reyes Oscar Orlando, Torres Díaz Sandra Patricia, & Urrea de Garcés Lucila. (2000). Playing and Teaching English to Adults. Universidad Nacional de Colombia.

Chicago Style (17th ed.) Citation

Cuervo Ballén Víctor Manuel, Reyes Oscar Orlando, Torres Díaz Sandra Patricia, and Urrea de Garcés Lucila. Playing and Teaching English to Adults. Universidad Nacional de Colombia, 2000.

MLA (9th ed.) Citation

Cuervo Ballén Víctor Manuel, et al. Playing and Teaching English to Adults. Universidad Nacional de Colombia, 2000.