Raggatt, H.G.
Lansdowne Press, 1968
Buku Teks
Blainey, Geoffrey, 1930-, author
Melbourne University Press, 1978
Buku Teks
Rizky Sulaeman Hardiputra, author
Fakultas Teknik Universitas Indonesia, 2015
UI - Skripsi (Membership)
Danu Ega, author
Fakultas Hukum Universitas Indonesia, 2013
UI - Skripsi (Membership)
Soetaryo Sigit, author
Department of Minessota , 1977
Buku Teks