Cita APA (7th ed.)
Levin, R. I. (1981). Statistics for management (2nd ed.). Prentice-Hall.
Cita Chicago (17th ed.)
Levin, Richard I. Statistics for Management. 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
Cita MLA (9th ed.)
Levin, Richard I. Statistics for Management. 2nd ed. Prentice-Hall, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.