APA Style
Challenge Book 2 : Level 1. (2000).
Ohio:
McGraw-Hill.
Chicago Style
Challenge Book 2 : Level 1.
.
Ohio:
McGraw-Hill,
2000.
Printed Book.
MLA Style
Challenge Book 2 : Level 1.
.
Ohio:
McGraw-Hill,
2000.
Printed Book.
Turabian Style
Challenge Book 2 : Level 1.
Ohio:
McGraw-Hill,
2000.
Printed Book.