The Encyclopedia of structural geology and plate tectonics
edited by Carl K. Seyfert
Van Nostrand Reinhold, 1987
 Buku Referensi
Encyclopedia of applied psychology
editor-in-chief Charles D. Spielberger
Hershey, 2004
 Buku Teks SO
Montgomery, Carla W.
Environmental geology
McGraw-Hill, 2003
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Gilluly, James
Principles of geology
W.H. Freeman, 1975
 Buku Referensi
Skinner, Brian J.
Physical geology
John Wiley & Sons, 1987
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