Singh, R. (2002). Economic environment of business: A case study approach.
Lua i Stíl Chicago (17ú heag.)Singh, Rakesh. Economic Environment of Business: A Case Study Approach. New Delhi, 2002.
Lua MLA (9ú heag.)Singh, Rakesh. Economic Environment of Business: A Case Study Approach. 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.