एपीए उद्धरण

Peterson's 2001. Tài liệu luyện thi TOEFL: TOEFL CBT Practice tests : CD2 - Time: 80', Track 8, Practice test: 3-5 [Đĩa CD-ROM].

शिकागो स्टाइल उद्धरण

Peterson's 2001. Tài Liệu Luyện Thi TOEFL: TOEFL CBT Practice Tests : CD2 - Time: 80', Track 8, Practice Test: 3-5 [Đĩa CD-ROM].

एमएलए उद्धरण

Peterson's 2001. Tài Liệu Luyện Thi TOEFL: TOEFL CBT Practice Tests : CD2 - Time: 80', Track 8, Practice Test: 3-5 [Đĩa CD-ROM].