Elifson, K. W. (1985). Fundamentals of Social Statistics (2nd ed.).
Lua i Stíl Chicago (17ú heag.)Elifson, Kirk W. Fundamentals of Social Statistics. 2nd ed. Brown Publishers, 1985.
Lua MLA (9ú heag.)Elifson, Kirk W. Fundamentals of Social Statistics. 2nd ed. 1985.
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