Hamblin, W. (1980). Physical geology. Burgess.
Cita Chicago (17th ed.)Hamblin, W.K. Physical Geology. Minneapolis: Burgess, 1980.
Cita MLA (9th ed.)Hamblin, W.K. Physical Geology. Burgess, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.