Lua APA (7ú heag.)

LEVIN RICHARD I. (2005). STATISTICS FOR MANAGEMENT. PEARSON PRENTICE HALL.

Lua i Stíl Chicago (17ú heag.)

LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. NEW DELHI: PEARSON PRENTICE HALL, 2005.

Lua MLA (9ú heag.)

LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. PEARSON PRENTICE HALL, 2005.

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