APA Style

Herrera, Mario, Pinkley, Diane. (2008). Backpack British English . Batam Centre: 123 Publishing House.

Chicago Style

Herrera, Mario, Pinkley, Diane. Backpack British English. Batam Centre: 123 Publishing House, 2008. Book.

MLA Style

Herrera, Mario, Pinkley, Diane. Backpack British English. Batam Centre: 123 Publishing House, 2008. Book.

Turabian Style

Herrera, Mario, Pinkley, Diane. Backpack British English. Batam Centre: 123 Publishing House, 2008. Book.