Crispin, Frederic Swing, author
Bruce Pub. Co., 1945
Buku Teks
Crispin, Frederic Swing, author
Bruce Pub. Co., 1961
Buku Referensi
edited by Sybil P. Parker
McGraw-Hill, 1984
Buku Referensi
McGraw-Hill, 2003
Buku Referensi
McGraw-Hill dictionary of earth science
McGraw-Hill, 2003
Buku Referensi