APA (7th ed.) Citation

Friendly, M. (2000). Visualizing categorical data. SAS Institute.

Chicago Style (17th ed.) Citation

Friendly, Michael. Visualizing Categorical Data. Cary, N.C: SAS Institute, 2000.

MLA (9th ed.) Citation

Friendly, Michael. Visualizing Categorical Data. SAS Institute, 2000.

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