APA Style

Willems, Mo. (2008). I Will Surprise My Friend! . New York: Hyperion Books.

Chicago Style

Willems, Mo. I Will Surprise My Friend!. New York: Hyperion Books, 2008. Printed Book.

MLA Style

Willems, Mo. I Will Surprise My Friend!. New York: Hyperion Books, 2008. Printed Book.

Turabian Style

Willems, Mo. I Will Surprise My Friend!. New York: Hyperion Books, 2008. Printed Book.