Allen, R. G. D. (1966). Statistics for economists (3rd (Revised ed.).). Hutchinson.
Lua i Stíl Chicago (17ú heag.)Allen, R. G. D. Statistics for Economists. 3rd (Revised ed.). London: Hutchinson, 1966.
Lua MLA (8ú heag.)Allen, R. G. D. Statistics for Economists. 3rd (Revised ed.). Hutchinson, 1966.
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