Jackson, S. L. (2003). Research methods and statistics: A critical thinking approach. Thomson/Wadsworth.
Lua i Stíl Chicago (17ú heag.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. Australia: Thomson/Wadsworth, 2003.
Lua MLA (9ú heag.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. Thomson/Wadsworth, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.