Allen Ray, A. (1982). SAS user's guide: Statistics 1982 edition. Sas Institute.
Cita Chicago Style (17a ed.)Allen Ray, Alice. SAS User's Guide: Statistics 1982 Edition. Sas Institute, 1982.
Cita MLA (9a ed.)Allen Ray, Alice. SAS User's Guide: Statistics 1982 Edition. Sas Institute, 1982.
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