(1990). Bill Gates & Microsoft. H: Văn hóa.
Chicago Style aipamenaBill Gates & Microsoft. H: Văn hóa, 1990.
MLA aipamenaBill Gates & Microsoft. H: Văn hóa, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(1990). Bill Gates & Microsoft. H: Văn hóa.
Chicago Style aipamenaBill Gates & Microsoft. H: Văn hóa, 1990.
MLA aipamenaBill Gates & Microsoft. H: Văn hóa, 1990.