APA (7th ed.) Citation

(2009). Ggplot2: Elegant graphics for data analysis / Hadley Wickham.

Chicago Style (17th ed.) Citation

Ggplot2: Elegant Graphics for Data Analysis / Hadley Wickham. 2009.

MLA (9th ed.) Citation

Ggplot2: Elegant Graphics for Data Analysis / Hadley Wickham. 2009.

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