1.

図書
図書
1. Delta's key to the TOEFL iBT : advanced skill practice. Rev. ed
by Nancy Gallagher
出版情報: McHenry : Delta Pub. Co., c2011
2.

図書
図書
2. Delta's key to the next generation TOEFL test : advanced skill practice
by Nancy Gallagher
出版情報: [s.l.] : Delta Pub. Co., c2005