Armstrong, C. J. (1995). World databases in patents. Bowker Saur.
Chicago Style aipamenaArmstrong, Christopher J. World Databases in Patents. London: Bowker Saur, 1995.
MLA aipamenaArmstrong, Christopher J. World Databases in Patents. Bowker Saur, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.