The Japanese Names of the Morse & The Narwhal by Frank HawleyRichard C. RudolphMN 15:3/4 (1959) pp. 472–74 → jstor.org/stable/2383460ShareThe Agrarian Origins of Modern Japan. by Thomas C. Smith; Village Japan by Richard K. Beardsley, John W. Hall, Robert E. Ward; Japanese Popular Culture by Hidetoshi KatōJapanese Music and Musical Instruments by William P. Malm