Peterson's 2001. Tài liệu luyện thi TOEFL: TOEFL CBT Practice tests : CD1 - Time: 80', Track 7, Practice test: 1-3 [Đĩa CD-ROM].
Trích dẫn kiểu ChicagoPeterson's 2001. Tài Liệu Luyện Thi TOEFL: TOEFL CBT Practice Tests : CD1 - Time: 80', Track 7, Practice Test: 1-3 [Đĩa CD-ROM].
MLA引文Peterson's 2001. Tài Liệu Luyện Thi TOEFL: TOEFL CBT Practice Tests : CD1 - Time: 80', Track 7, Practice Test: 1-3 [Đĩa CD-ROM].
警告:這些引文格式不一定是100%准確.