APA ציטוט

ProQuest. (1997). ProQuest serchware for windows: Version 5.1 [Đĩa CD-ROM]. USA: Umi company.

Trích dẫn kiểu Chicago

ProQuest. ProQuest Serchware for Windows: Version 5.1 [Đĩa CD-ROM]. USA: Umi company, 1997.

ציטוט MLA

ProQuest. ProQuest Serchware for Windows: Version 5.1 [Đĩa CD-ROM]. USA: Umi company, 1997.