Cita APA (7a ed.)

Herrera, M., & Pinkley, D. (2008). Backpack 1: Content reader.

Cita Chicago Style (17a ed.)

Herrera, Mario, y Diane Pinkley. Backpack 1: Content Reader. Pearson, 2008.

Cita MLA (8a ed.)

Herrera, Mario, y Diane Pinkley. Backpack 1: Content Reader. 2008.