SINGH S R J. (2012). STATISTICAL METHODS FOR AGRICULTURAL WORKERS. OXFORD BOOK COMPANY, NEW DELHI.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSINGH S R J. STATISTICAL METHODS FOR AGRICULTURAL WORKERS. OXFORD BOOK COMPANY, NEW DELHI, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSINGH S R J. STATISTICAL METHODS FOR AGRICULTURAL WORKERS. OXFORD BOOK COMPANY, NEW DELHI, 2012.
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