APA (7th ed.) Citation

Osborne, M. P. (2011). Sea monsters: A nonfiction companion to magic tree house #39: dark day in the deep sea.

Chicago Style (17th ed.) Citation

Osborne, Mary Pope. Sea Monsters: A Nonfiction Companion to Magic Tree House #39: Dark Day in the Deep Sea. 2011.

MLA (8th ed.) Citation

Osborne, Mary Pope. Sea Monsters: A Nonfiction Companion to Magic Tree House #39: Dark Day in the Deep Sea. 2011.

Warning: These citations may not always be 100% accurate.