Gills, R., R. Singh, and M. S. Nain. “Sustainability Dimensions and Organic Farming – A Case Analysis of Organic Cardamom (Elettaria Cardamomum) Growers in Kerala State of India”. Indian Journal of Extension Education, vol. 57, no. 1, Dec. 2020, pp. 8-14, https://epubs.icar.org.in/index.php/IJEE/article/view/109074.