APA (7th ed.) Citation

Friendly, M. (2001). Visualizing categorical data / Michael Friendly. SAS Institute.

Chicago Style (17th ed.) Citation

Friendly, Michael. Visualizing Categorical Data / Michael Friendly. Cary, N.C.: SAS Institute, 2001.

MLA (9th ed.) Citation

Friendly, Michael. Visualizing Categorical Data / Michael Friendly. SAS Institute, 2001.

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