Estilo APA

Herrera, Mario, Pinkley, Diane. (2007). Backpack 2 : Workbook. British English / Mario Herrera , Diane Pinkley . Harlow: Pearson / Longman.

Estilo Chicago

Herrera, Mario, Pinkley, Diane. Backpack 2 : Workbook. British English / Mario Herrera , Diane Pinkley. Harlow: Pearson / Longman, 2007. IES DyT 9-001 Gral. San Martin.

Estilo MLA

Herrera, Mario, Pinkley, Diane. Backpack 2 : Workbook. British English / Mario Herrera , Diane Pinkley. Harlow: Pearson / Longman, 2007. IES DyT 9-001 Gral. San Martin.

Estilo Turabian

Herrera, Mario, Pinkley, Diane. Backpack 2 : Workbook. British English / Mario Herrera , Diane Pinkley. Harlow: Pearson / Longman, 2007. IES DyT 9-001 Gral. San Martin.