L'Esperance, W. (1971). Modern statistics for business and economics. MacMillan.
Cita Chicago (17th ed.)L'Esperance, Wilford. Modern Statistics for Business and Economics. Nueva York: MacMillan, 1971.
Cita MLA (9th ed.)L'Esperance, Wilford. Modern Statistics for Business and Economics. MacMillan, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.