MLA

Singh, D, and M.R Singh. Farmers' Perception of Differential Credibility Pattern of Information Sources. India, 1972.

APA

Singh, D., & Singh, M. (1972). Farmers' perception of differential credibility pattern of information sources. India.

Chicago

Singh, D., and M.R Singh. Farmers' Perception of Differential Credibility Pattern of Information Sources. India, 1972.