APA引文

ProQuest. (1997). Dissertation abstracts [Đĩa CD-ROM]. USA: Umi company.

Trích dẫn kiểu Chicago

ProQuest. Dissertation Abstracts [Đĩa CD-ROM]. USA: Umi company, 1997.

MLA引文

ProQuest. Dissertation Abstracts [Đĩa CD-ROM]. USA: Umi company, 1997.

警告：这些引文格式不一定是100％准确.