HAIR JOSEPH F. (2006). MULTIVARIATE DATA ANALYSIS 6TH ED (6TH ED.). PEARSON EDUCATION.
Lua i Stíl Chicago (17ú heag.)HAIR JOSEPH F. MULTIVARIATE DATA ANALYSIS 6TH ED. 6TH ED. INDIA: PEARSON EDUCATION, 2006.
Lua MLA (9ú heag.)HAIR JOSEPH F. MULTIVARIATE DATA ANALYSIS 6TH ED. 6TH ED. PEARSON EDUCATION, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.