APA Style
Herrera, Mario. (2008).
Backpack 6 .
Batam Centre:
123 Publishing House.
Chicago Style
Herrera, Mario.
Backpack 6.
Batam Centre:
123 Publishing House,
2008.
Book.
MLA Style
Herrera, Mario.
Backpack 6.
Batam Centre:
123 Publishing House,
2008.
Book.
Turabian Style
Herrera, Mario.
Backpack 6.
Batam Centre:
123 Publishing House,
2008.
Book.