Cita APA

Thorpe,Edgar, & Thorpe,Showick. (2003). Objective english. Pearson Education.

Citación estilo Chicago

Thorpe,Edgar, y Thorpe,Showick. Objective English. New Delhi: Pearson Education, 2003.

Cita MLA

Thorpe,Edgar, y Thorpe,Showick. Objective English. Pearson Education, 2003.