Lapin, L. (1987). Statistics for modern business decisions (4ª ed.). Harcourt Brace Jovanovich.
Cita Chicago (17th ed.)Lapin, Lawrence. Statistics for Modern Business Decisions. 4ª ed. Harcourt Brace Jovanovich, 1987.
Cita MLA (9th ed.)Lapin, Lawrence. Statistics for Modern Business Decisions. 4ª ed. Harcourt Brace Jovanovich, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.