Sekaran Uma & Bougie Roger. (2016). Research Methods For Business,A Skill-Building Approach (6th.). Wiley India.Pvt.Ltd.
Lua i Stíl Chicago (17ú heag.)Sekaran Uma & Bougie Roger. Research Methods For Business,A Skill-Building Approach. 6th. New Delhi: Wiley India.Pvt.Ltd, 2016.
Lua MLA (9ú heag.)Sekaran Uma & Bougie Roger. Research Methods For Business,A Skill-Building Approach. 6th. Wiley India.Pvt.Ltd, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.