Jones, Joseph Marion
Pergamon Press, 1965
Buku Teks
Rubin, Seymour J., author
Harper & Row, 1966
Buku Teks
Wilson, Thomas, author
Macmillan, 1965
Buku Teks
THe OPEC fund for International Development
New York : THe OPEC fund for International Development, 1998,
Buku Referensi
Nairobi: The United Nations Centre for Human Settlements (Habitat), 1991, 1991
Buku Referensi