Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.