एपीए उद्धरण

Singh, H. P. Resource appraisal and Planning in India.

शिकागो स्टाइल उद्धरण

Singh, Harendra Pal. Resource Appraisal and Planning in India. :.

एमएलए उद्धरण

Singh, Harendra Pal. Resource Appraisal and Planning in India.