Ubiquity. Cambridge University Press.
Chicago Style aipamenaUbiquity. Cambridge University Press.
MLA aipamenaUbiquity. Cambridge University Press.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
Ubiquity. Cambridge University Press.
Chicago Style aipamenaUbiquity. Cambridge University Press.
MLA aipamenaUbiquity. Cambridge University Press.