APA Style

Pilkey, D., Ontiveros, M. (). Ricky Ricotta's Mighty Robot vs. the uranium unicorns from Uranus (1st). New York: Scholastic.

MLA Style

Pilkey, Dav., Ontiveros, Martin. "Ricky Ricotta's Mighty Robot vs. the uranium unicorns from Uranus". 1st New York: Scholastic, . Text.