Abhilash, E., A. Aswathi, and S. P. Parayil. “Influence of Organic Manures and Biofertilizers on the Yield of Amaranthus Dubius”. Asia Pacific Journal of Environment Ecology and Sustainable Development, vol. 1, no. 1, Jan. 2014, pp. 26-28, doi:10.3126/apjeesd.v1i1.9507.