Merrill, W. C., & Fox, K. A. (1970). Introduction to economic statistics. Wiley.
Cita Chicago (17th ed.)Merrill, William Charles, i Karl August Fox. Introduction to Economic Statistics. New York: Wiley, 1970.
Cita MLA (9th ed.)Merrill, William Charles, i Karl August Fox. Introduction to Economic Statistics. Wiley, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.