APA (7th ed.) Citation

Siegel, E., Retter, A., Volckhausen, E., & Demarest, R. (2015). Exist (First edition.). O'Reilly.

Chicago Style (17th ed.) Citation

Siegel, Erik, Adam Retter, Ellie Volckhausen, and Rebecca Demarest. Exist. First edition. Sebastopol, California: O'Reilly, 2015.

MLA (9th ed.) Citation

Siegel, Erik, et al. Exist. First edition. O'Reilly, 2015.