Hazumi, Toshihiro (1994). “Status of Japanese black bear”. Bears: Their Biology and Management. tr. 145–148. doi:10.2307/3872694. JSTOR3872694.
Koike, Shinsuke; Masaki, Takashi; Nemoto, Yui; Kozakai, Chinatsu; Yamazaki, Koji; Kasai, Shinsuke; Nakajima, Ami; Kaji, Koichi (2011). “Estimate of the seed shadow created by the Asiatic black bear Ursus thibetanus and its characteristics as a seed disperser in Japanese cool-temperate forest”. Oikos. 120 (2): 280–290. doi:10.1111/j.1600-0706.2010.18626.x.
jstor.org
Hazumi, Toshihiro (1994). “Status of Japanese black bear”. Bears: Their Biology and Management. tr. 145–148. doi:10.2307/3872694. JSTOR3872694.