APA (7th ed.) Citation

Ziefert, H., & Bolam, E. (2015). Hey, baby, it's time to come out! Blue Apple.

Chicago Style (17th ed.) Citation

Ziefert, Harriet, and Emily Bolam. Hey, Baby, It's Time to Come Out! Maplewood, NJ: Blue Apple, 2015.

MLA (8th ed.) Citation

Ziefert, Harriet, and Emily Bolam. Hey, Baby, It's Time to Come Out! Blue Apple, 2015.

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