Sivakumar, K., and S.D. Sivakumar. “A Study on Farmers Preference and Market Promotion Activities With Reference to Rice Herbicides”. Indian Journal of Marketing 34, no. 12 (December 27, 2004). Accessed January 21, 2026. https://www.indianjournalofmarketing.com/index.php/ijom/article/view/34142.