Washington The World Bank 1993,
Buku Teks
Kuiper, Edward, author
Butterworth, 1967
Buku Teks
Femila Zen Fataya, author
Fakultas Teknik Universitas Indonesia, 2005
UI - Skripsi (Membership)
E & FN Spon, 1999
Buku Teks
Universitas Indonesia, 1980
UI - Laporan Penelitian