和英語林集成第三版 [Digital 'Japanese English Forest Collection']. Meiji Gakuin University Library (dalam bahasa Jepun). Meiji Gakuin University. Mac 2010 [2006]. Dicapai pada 10 Ogos 2017.
Hadamitzky, Wolfgang; Spahn, Mark (Oktober 2005). "Romanization systems". Wolfgang Hadamitzky: Japan-related Textbooks, Dictionaries, and Reference Works. Dicapai pada 10 Ogos 2017.