Lua APA (7ú heag.)

Sandy, R. (1990). Statistics for business and economics. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Sandy, Robert. Statistics for Business and Economics. New York: McGraw-Hill, 1990.

Lua MLA (9ú heag.)

Sandy, Robert. Statistics for Business and Economics. McGraw-Hill, 1990.

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