Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Reino Unido British Library. (1997). ˜The œBritish Library map catalogue on CD-ROM. Primary Source Media.
Chicago Style (17th ed.) Zitazioa
Reino Unido British Library. ˜The œBritish Library Map Catalogue on CD-ROM. Primary Source Media, 1997.
MLA (9th ed.) Zitazioa
Reino Unido British Library. ˜The œBritish Library Map Catalogue on CD-ROM. Primary Source Media, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.