@article{oai:ycc.repo.nii.ac.jp:00002329,
 author = {清水Stumborg, 惠子 and SHIMIZU STUMBORG, Keiko},
 issue = {1},
 journal = {横浜商大論集, YOKOHAMA SHODAI RONSHU},
 month = {Oct},
 pages = {25--55},
 title = {A Study on Usage of Polite Expressions in Business English in the United States},
 volume = {55},
 year = {2021},
 yomi = {シミズスタンボーグ, ケイコ}
}