Elifson, K. (1990). Fundamentals of social statistics (2nd.ed.). McGraw-Hill.
Cita Chicago (17th ed.)Elifson, Kirk. Fundamentals of Social Statistics. 2nd.ed. Boston: McGraw-Hill, 1990.
Cita MLA (9th ed.)Elifson, Kirk. Fundamentals of Social Statistics. 2nd.ed. McGraw-Hill, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.