APA (7th ed.) Citation

Higgins, N., Infante, S., & Koskinen, E. (2018). What kind of clouds? Cantata Learning.

Chicago Style (17th ed.) Citation

Higgins, Nadia, Sara Infante, and Erik Koskinen. What Kind of Clouds? North Mankato, MN: Cantata Learning, 2018.

MLA (9th ed.) Citation

Higgins, Nadia, et al. What Kind of Clouds? Cantata Learning, 2018.