Gray, A. (2000). Tubes (2nd ed.). Birkhauser Boston.
Chicago Style aipamenaGray, Alfred. Tubes. 2nd ed. Boston: Birkhauser Boston, 2000.
MLA aipamenaGray, Alfred. Tubes. 2nd ed. Birkhauser Boston, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.