APA Style

Herrera, Mario, Pinkley, Diane. (2009). Backpack 4 Second Edition . USA: 123 Publishing House.

Chicago Style

Herrera, Mario, Pinkley, Diane. Backpack 4 Second Edition. USA: 123 Publishing House, 2009. Book with Compact Disc.

MLA Style

Herrera, Mario, Pinkley, Diane. Backpack 4 Second Edition. USA: 123 Publishing House, 2009. Book with Compact Disc.

Turabian Style

Herrera, Mario, Pinkley, Diane. Backpack 4 Second Edition. USA: 123 Publishing House, 2009. Book with Compact Disc.