Spencer, J. E., & Geary, R. C. (1974). Exercises in mathematical economics and econometrics, with outlines of theory. Hafner Press.
Cita Chicago (17th ed.)Spencer, John Ervine, i Robert Charles Geary. Exercises in Mathematical Economics and Econometrics, with Outlines of Theory. New York: Hafner Press, 1974.
Cita MLA (9th ed.)Spencer, John Ervine, i Robert Charles Geary. Exercises in Mathematical Economics and Econometrics, with Outlines of Theory. Hafner Press, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.