@article{oai:niigata-u.repo.nii.ac.jp:00034203,
 author = {池田, 英喜},
 journal = {新潟大学国際センター紀要, Journal of the International Exchange Support Center},
 month = {Mar},
 note = {A Little argument of the sentence ending forms in Japanese which are “desu” and “da”. People believe that “desu” is a polite form of “da” and they are taught in that way in Japanese language classes. In this article, however, I tried to prove that they both belong to a totally different speech mode ;“da” to Monologue mode and “desu” to Dialogue mode, and that the previous explanation about these 2 sentence ending forms is dangerous.},
 pages = {13--22},
 title = {「です」は「だ」の丁寧体?},
 volume = {12},
 year = {2016}
}