HAROWITZ, I. (1972). An introduction to quantitative busines analysis (2.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)HAROWITZ, IRA. An Introduction to Quantitative Busines Analysis. 2. Rio de Janeiro: McGraw-Hill, 1972.
Lua MLA (8ú heag.)HAROWITZ, IRA. An Introduction to Quantitative Busines Analysis. 2. McGraw-Hill, 1972.
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