APA (7th ed.) Citation

Osborne, M. P. (2012). Ancient rome and pompeii: A nonfiction companion to magic tree house #13: vacation under the volcano.

Chicago Style (17th ed.) Citation

Osborne, Mary Pope. Ancient Rome and Pompeii: A Nonfiction Companion to Magic Tree House #13: Vacation Under the Volcano. 2012.

MLA (8th ed.) Citation

Osborne, Mary Pope. Ancient Rome and Pompeii: A Nonfiction Companion to Magic Tree House #13: Vacation Under the Volcano. 2012.

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