Hum Log Story: From Concept to After-Effects. Communication 2000AD, New Delhi: Indian Institute of Mass Communications, pp. 17-25 —- Arvind Singhal and Everett M. Rogers (1991) —- http://utminers.utep.edu/asinghal/Articles%20and%20Chapters/Singhal%20Rogers%201991%20Hum%20Log.pdf