Sahu, R. P., and M.P. Singh , translators. “A Case Study of Dissemination of Pigeonpea Cultivation Technology in Hilly Areas of Uttarakhand ”. Indian Journal of Extension Education, vol. 50, no. 1&2, June 2014, pp. 35-38, https://acspublisher.com/journals/index.php/ijee/article/view/5367.