COOPER DONALD R. (2009). BUSINESS RESEARCH METHODS. TATA MCGRAW-HILL.
Chicago Style (17th ed.) CitationCOOPER DONALD R. BUSINESS RESEARCH METHODS. NEW DELHI: TATA MCGRAW-HILL, 2009.
ציטוט MLACOOPER DONALD R. BUSINESS RESEARCH METHODS. TATA MCGRAW-HILL, 2009.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.