SEKARAN, U. (1992). Research Methods For Business: A Skill-building Approach. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)SEKARAN, Uma. Research Methods For Business: A Skill-building Approach. John Wiley & Sons, 1992.
Lua MLA (8ú heag.)SEKARAN, Uma. Research Methods For Business: A Skill-building Approach. John Wiley & Sons, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.