WANNACOTT T H. (1973). INTRODUCTORY STATISTICS FOR BUSINESS AND ECONOMICS (3RD.). JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)WANNACOTT T H. INTRODUCTORY STATISTICS FOR BUSINESS AND ECONOMICS. 3RD. NEW JERSEY: JOHN WILEY AND SONS, 1973.
Lua MLA (9ú heag.)WANNACOTT T H. INTRODUCTORY STATISTICS FOR BUSINESS AND ECONOMICS. 3RD. JOHN WILEY AND SONS, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.