APA (7th ed.) Citation

O'Leary, S., & Morstad, J. (2015). This is Sadie. Tundra Books.

Chicago Style (17th ed.) Citation

O'Leary, Sara, and Julie Morstad. This Is Sadie. Toronto: Tundra Books, 2015.

MLA (8th ed.) Citation

O'Leary, Sara, and Julie Morstad. This Is Sadie. Tundra Books, 2015.

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