Lake, L. H., & Mc Knight, J. (2015). Proc Tabulate by Example (Second Edition.). SAS Institute Inc..
Lua i Stíl Chicago (17ú heag.)Lake, Lauren Haworth, agus Julia Mc Knight. Proc Tabulate by Example. Second Edition. Cary, North Carolina: SAS Institute Inc., 2015.
Lua MLA (8ú heag.)Lake, Lauren Haworth, agus Julia Mc Knight. Proc Tabulate by Example. Second Edition. SAS Institute Inc., 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.