Gleason, W. (1981). Statistics a first course. Wadsworth Pub Comp.
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Chicago-čujuhus (17. p.)
Gleason, Walter. Statistics a First Course. California: Wadsworth Pub Comp, 1981.
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MLA-čujuhus (9. p.)
Gleason, Walter. Statistics a First Course. Wadsworth Pub Comp, 1981.
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