Cita APA (7a ed.)

Herrera, M., & Pinkley, D. (2005). Backpack starter: Teacher ´s edition.

Cita Chicago Style (17a ed.)

Herrera, Mario, y Diane Pinkley. Backpack Starter: Teacher ´s Edition. Pearson ; Longman, 2005.

Cita MLA (8a ed.)

Herrera, Mario, y Diane Pinkley. Backpack Starter: Teacher ´s Edition. 2005.