Richardson, C. H. (1934). An introduction to statistical analysis. Harcourt, Brace and Co..
Lua i Stíl Chicago (17ú heag.)Richardson, C. H. An Introduction to Statistical Analysis. New York: Harcourt, Brace and Co., 1934.
Lua MLA (8ú heag.)Richardson, C. H. An Introduction to Statistical Analysis. Harcourt, Brace and Co., 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.