LEVIN RICHARD I. (2008). STATISTICS FOR MANAGEMENT (7TH.). PEARSON EDUCATION.
Cita Chicago (17th ed.)LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. 7TH. NEW DELHI: PEARSON EDUCATION, 2008.
Cita MLA (9th ed.)LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. 7TH. PEARSON EDUCATION, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.