@book{Kamada_Sugimoto_2012a, address={Tokyo}, edition={Shohan = 1st edition}, title={Ikita sozai de manabu shin chūkyū kara jōkyū e no Nihongo}, publisher={Japan Times}, author={Kamada, Osamu and Sugimoto, Fusako}, year={2012} }
@book{Kamada_Sugimoto_2012b, address={Tokyo}, edition={Shohan = 1st edition}, title={Ikita sozai de manabu shin chūkyū kara jōkyū e no Nihongo}, publisher={Japan Times}, author={Kamada, Osamu and Sugimoto, Fusako}, year={2012} }
@book{Miyahara_2006, address={Tokyo}, title={Ryuugakusei no tame no Jidai o yomitoku Nihongo}, publisher={3A Corporation}, author={Miyahara, A.}, year={2006} }
@book{Shimizu_Okuyama_2015, address={Tokyo}, title={Nihongo gakushūsha no tameno dokkai gensen tēma 10: Chūjōkyū}, publisher={Bonjinsha}, author={Shimizu, Masayuki and Okuyama, Takayuki}, year={2015} }
@book{Tomomatsu_2008, address={Tokyo}, title={Shouronbun e no 12 no steppu}, publisher={3A Corporation}, author={Tomomatsu, Etsuko}, year={2008} }
@book{Developing your skills for public speaking, publisher={Tankobon} }