Cite

I am going! : an Elephant & Piggie book / by Mo Willems.

MLA

Willems, Mo. I Am Going! : an Elephant & Piggie Book / by Mo Willems. Hyperion Books for Children, 0AD. https://collections.library.yale.edu/catalog/15497729.

APA, 6th edition

Willems, M. (0 C.E.). I am going! : an Elephant & Piggie book / by Mo Willems. [High interest-low vocabulary books, Juvenile literature]. Hyperion Books for Children, https://collections.library.yale.edu/catalog/15497729.