Flint, R. F. (1977). Physical geology. John Wiley.
Chicago Style (17th ed.) ZitazioaFlint, Richard Foster. Physical Geology. New York: John Wiley, 1977.
MLA (9th ed.) ZitazioaFlint, Richard Foster. Physical Geology. John Wiley, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.