Tripathi, Harish. “Historical Study of the Role of Feudalism in World History: विश्व के इतिहास में सामंतवाद की भूमिका का ऐतिहासिक अध्ययन”. RESEARCH REVIEW International Journal of Multidisciplinary 8, no. 4 (April 14, 2023): 130–137. Accessed October 7, 2025. https://rrjournals.com/index.php/rrijm/article/view/660.