PATEL J B. (1995). MANUAL ON BUSINESS OPPORTUNITY IDENTIFICATION AND SELECTION. ENTREPRENEURSHIP DEV. INSTITUTE OF INDIA.
Lua i Stíl Chicago (17ú heag.)PATEL J B. MANUAL ON BUSINESS OPPORTUNITY IDENTIFICATION AND SELECTION. AHMEDABAD: ENTREPRENEURSHIP DEV. INSTITUTE OF INDIA, 1995.
Lua MLA (9ú heag.)PATEL J B. MANUAL ON BUSINESS OPPORTUNITY IDENTIFICATION AND SELECTION. ENTREPRENEURSHIP DEV. INSTITUTE OF INDIA, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.