SANDERS, D. H. (1990). Statistic A Fresh Approach Donald H. Sanders. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)SANDERS, Donald H. Statistic A Fresh Approach Donald H. Sanders. McGraw-Hill, 1990.
Lua MLA (8ú heag.)SANDERS, Donald H. Statistic A Fresh Approach Donald H. Sanders. McGraw-Hill, 1990.
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