Jackson, S. L. (2016). Research methods and statistics: A critical thinking approach (5th. ed.). Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. 5th. ed. USA: Cengage Learning, 2016.
Lua MLA (8ú heag.)Jackson, Sherri L. Research Methods and Statistics: A Critical Thinking Approach. 5th. ed. Cengage Learning, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.