Template:Matsui et al., 2007
- Matsui, M., Nishikawa, K., Misawa, Y. & Tanabe, S. 2007. Systematic Relationships of Hynobius okiensis among Japanese Salamanders (Amphibia: Caudata). Zoological Science 24(7): 746–751. DOI: 10.2108/zsj.24.746 hdl: 2433/85321 ResearchGate