@article{oai:nufs.repo.nii.ac.jp:00000631,
 author = {ARIYOSHI, Mayumi},
 issue = {40},
 journal = {論叢, The Journal of Nagasaki Junior College of Foreign Languages},
 month = {Dec},
 pages = {61--75},
 title = {Methodological Frameworks for Investigating Variability in Interlanguage},
 year = {1992}
}