Summers, G. W., Peters, W. S., & Arstrong, C. P. (1985). Basic statistics in business and economics (4th ed.). Wadsworth.
Citace podle Chicago (17th ed.)Summers, George W., William S. Peters, a Caharles P. Arstrong. Basic Statistics in Business and Economics. 4th ed. Belmont, CA: Wadsworth, 1985.
Citace podle MLA (9th ed.)Summers, George W., et al. Basic Statistics in Business and Economics. 4th ed. Wadsworth, 1985.
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