APA Style

Herrera, Mario. (2005). Backpack 6 Teacher's book 6 British English . England: Longman.

Chicago Style

Herrera, Mario. Backpack 6 Teacher's book 6 British English. England: Longman, 2005. Book.

MLA Style

Herrera, Mario. Backpack 6 Teacher's book 6 British English. England: Longman, 2005. Book.

Turabian Style

Herrera, Mario. Backpack 6 Teacher's book 6 British English. England: Longman, 2005. Book.