Singh, J. P. (1979). New seeds adoption and yield. Sterling Publishers Pvt Ltd.
Chicago Edition CitationSingh, J P. New Seeds Adoption and Yield. New Delhi: Sterling Publishers Pvt Ltd, 1979.
Cita MLASingh, J P. New Seeds Adoption and Yield. Sterling Publishers Pvt Ltd, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.