Watts,Perry. (2002). Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software) (NA.). SAS.
Citazione stile Chigago Style (17a edizione)Watts,Perry. Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software). NA. USA: SAS, 2002.
Citatione MLA (9a ed.)Watts,Perry. Multiple-Plot Displays: Simplified with Macros (Art Carpenter's SAS Software). NA. SAS, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.