Thomas, R. (1997). Quantitative methods for business studies. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Thomas, Richard. Quantitative Methods for Business Studies. London: Prentice Hall, 1997.
Lua MLA (9ú heag.)Thomas, Richard. Quantitative Methods for Business Studies. Prentice Hall, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.