Lua APA (7ú heag.)

John E. Freund, F. J. W. a. B. M. P. Elementary business statistics the modern approach. Prentice Hall.

Lua i Stíl Chicago (17ú heag.)

John E. Freund, Frank J. Williams and Benjamin M. Perles. Elementary Business Statistics the Modern Approach. Prentice Hall.

Lua MLA (8ú heag.)

John E. Freund, Frank J. Williams and Benjamin M. Perles. Elementary Business Statistics the Modern Approach. Prentice Hall.

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