APA Style

Herrera, Mario. (2007). Backpack 2 British English (3). Singapore: Pearson Longman.

Chicago Style

Herrera, Mario. Backpack 2 British English. 3 Singapore: Pearson Longman, 2007. Printed Book.

MLA Style

Herrera, Mario. Backpack 2 British English. 3 Singapore: Pearson Longman, 2007. Printed Book.

Turabian Style

Herrera, Mario. Backpack 2 British English. 3 Singapore: Pearson Longman, 2007. Printed Book.