APA (7th ed.) Zitazioa

(1997). The Frankfurt CD-ROM. The electronic guide to the Frankfurt book fair.

Chicago Style (17th ed.) Zitazioa

The Frankfurt CD-ROM. The Electronic Guide to the Frankfurt Book Fair. 1997.

MLA (9th ed.) Zitazioa

The Frankfurt CD-ROM. The Electronic Guide to the Frankfurt Book Fair. 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.