@article{oai:tourism.repo.nii.ac.jp:00000176,
 author = {Cravotta, 3 Joseph S. and Johnson, Wayne K. and Cravotta, Joseph S.III and Johnson, Wayne K},
 journal = {大阪明浄大学紀要, Journal of Osaka Meijo University},
 month = {Mar},
 pages = {45--57},
 title = {Walking a Tightrope in Content-Based Language Classes : The Use of Clear Boundaries to Prompt Students to Improve their English},
 volume = {3},
 year = {2003},
 yomi = {クラボッタ, ジョセフ and ジョンソン, ウェイン}
}