McGraw-Hill, 1960; 1966
Buku Referensi
Comite National Francais De Geologie
Paris : Louis Jean, 1994,
Buku Referensi
edited by Frank N. Magill ; consulting editor, Martha Riherd Weller
Salem Press, 1993
Buku Referensi
Peason, Karl, author
Meridian Books, 1957
Buku Teks
Ladyman, James, author
Routledge, 2002
Buku Teks