Healy, W.P.
Academic Press, 1982
Buku Teks
Fakultas Teknik Universitas Indonesia, 2006
UI - Laporan Penelitian
Hukum dan Pembangunan Vol. 30 No. 1 Januari-Maret 2000 : 20-34, 2000
Artikel Jurnal
edited by Dilyse Nuttall, Jane Rutt-Howard
Wiley-Blackweell, 2011
Buku Teks
edited by Giorgio Minotti
John Wiley & Sons, 2010
Buku Teks