Karmel, P. H., & Polasek, M. (1970). Applied statistics for economists (3rd ed.). Pitman.
Lua i Stíl Chicago (17ú heag.)Karmel, Peter Henry, agus M. Polasek. Applied Statistics for Economists. 3rd ed. London: Pitman, 1970.
Lua MLA (9ú heag.)Karmel, Peter Henry, agus M. Polasek. Applied Statistics for Economists. 3rd ed. Pitman, 1970.
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