Mansfield, E. (1987). Statistics for business and economics: Methods and applications (3rd ed.). W.W. Norton.
Lua i Stíl Chicago (17ú heag.)Mansfield, Edwin. Statistics for Business and Economics: Methods and Applications. 3rd ed. New York: W.W. Norton, 1987.
Lua MLA (9ú heag.)Mansfield, Edwin. Statistics for Business and Economics: Methods and Applications. 3rd ed. W.W. Norton, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.