APA Style

Riordan, R. (2016). For Magnus Chase: Hotel Valhalla guide to the Norse worlds: your introduction to deities, mythical beings & fantastic creatures (First). New York: Companion Book.

MLA Style

Riordan, Rick. "For Magnus Chase: Hotel Valhalla guide to the Norse worlds: your introduction to deities, mythical beings & fantastic creatures". First New York: Companion Book, 2016. printed.