Leet, L. D. (1982). Physical geology. Prentice-Hall.
Chicago Style (17th ed.) ZitazioaLeet, L. Don. Physical Geology. Englewood Cliffs: Prentice-Hall, 1982.
MLA (9th ed.) ZitazioaLeet, L. Don. Physical Geology. Prentice-Hall, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.