1. Marketing of Wild Medicinal Plants ( Tribal Economy )- Economic and Political Weekly-https://drive.google.com/file/d/14fF9dwChhg_R6cN2v-y_Y07yhMXjrPZb/view?usp=sharing
2. The Tribal Economy of Kerala: An Intra-Regional Analysis Author(s): M. Kunhaman -https://drive.google.com/file/d/1yiTDPwGWSbU2h18xvjjSNGLsSk1SkxIV/view?usp=sharing
