Hired Swords: The Rise of Private Warrior Power in Early Japan by Karl F. FridayCarl SteenstrupMN 47:4 (1992) pp. 541–544 → jstor.org/stable/2385340ShareThe Demography of Sociopolitical Conflict in Japan, 1721–1846 by James W. WhiteAntiquity and Anachronism in Japanese History by Jeffrey P. Mass