Kurtz, N. R. (1983). Introduction to social statistics / Norman R. Kurtz. McGraw-Hill Book.
Cita Chicago (17th ed.)Kurtz, Norman R. Introduction to Social Statistics / Norman R. Kurtz. New York: McGraw-Hill Book, 1983.
Cita MLA (9th ed.)Kurtz, Norman R. Introduction to Social Statistics / Norman R. Kurtz. McGraw-Hill Book, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.