Watts,Perry. (2002). Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software) (NA.). SAS.
Chicago Style (17th ed.) CitationWatts,Perry. Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software). NA. USA: SAS, 2002.
MLA (9th ed.) CitationWatts,Perry. Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software). NA. SAS, 2002.
Warning: These citations may not always be 100% accurate.