@phdthesis{oai:tsukuba.repo.nii.ac.jp:00035914,
 author = {嶋田, 和成 and SHIMADA, Kazunari},
 month = {},
 note = {2014},
 school = {筑波大学, University of Tsukuba},
 title = {Japanese EFL Learners' Acquisition of Discourse Markers : A Comparative Analysis of Spoken Corpora and English Textbooks},
 year = {2014}
}