STEINHOFF, D. (1993). Small Business Management Fundamentals. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)STEINHOFF, Dan. Small Business Management Fundamentals. McGraw-Hill, 1993.
Lua MLA (8ú heag.)STEINHOFF, Dan. Small Business Management Fundamentals. McGraw-Hill, 1993.
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