Bowen, B. (1977). An introduction to data analysis. Freeman.
Lua i Stíl Chicago (17ú heag.)Bowen, Bruce. An Introduction to Data Analysis. San Francisco: Freeman, 1977.
Lua MLA (9ú heag.)Bowen, Bruce. An Introduction to Data Analysis. Freeman, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.