Artikel Jurnal
Wisnu Harviyanto
Fakultas Teknik Universitas Indonesia, 1999
UI - Skripsi Membership
edited by Russell O. and Garry D. Mckenzie
Burges Minnepotis, 1974
Buku Teks
editor, Arie Poldervaart
Geological Society of America, 1963
Buku Teks SO
edited by Ronald Bailey
McGraw-Hill, 2000
Buku Teks