Gregory, K. J. (1977). River channel changes. Wiley Eastern.
Chicago Style aipamenaGregory, K J. River Channel Changes. Chrichester: Wiley Eastern, 1977.
MLA aipamenaGregory, K J. River Channel Changes. Wiley Eastern, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.