@article{oai:kansaigaidai.repo.nii.ac.jp:00006674,
 author = {Weatherford, York},
 journal = {研究論集, Journal of Inquiry and Research},
 month = {Aug},
 pages = {1--13},
 title = {Universal Grammar and Second Language Acquisition : The Accesibility Debate},
 volume = {64},
 year = {1996}
}