SEKARAN UMA. (1992). RESEARCH METHODS FOR BUSINESS: A SKILL-BUILDING APPROACH (2ND.). JOHN WILEY AND SONS.
Chicago-referens (17:e uppl.)SEKARAN UMA. RESEARCH METHODS FOR BUSINESS: A SKILL-BUILDING APPROACH. 2ND. NEW YORK: JOHN WILEY AND SONS, 1992.
MLA-referens (9:e uppl.)SEKARAN UMA. RESEARCH METHODS FOR BUSINESS: A SKILL-BUILDING APPROACH. 2ND. JOHN WILEY AND SONS, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.