APA Style

Viorst, J., Cruz, R. (1987). Alexander and the Terrible, Horrible, No Good, Very Bad Day (1st). New York: Atheneum Books for Young Readers.

MLA Style

Viorst, Judith., Cruz, Ray. "Alexander and the Terrible, Horrible, No Good, Very Bad Day". 1st New York: Atheneum Books for Young Readers, 1987. Text.