Fortin, Yves, author
International Development Research Centre, 1976
Buku Teks
Widi Baskoro, author
Fakultas Teknik Universitas Indonesia, 2005
UI - Skripsi (Membership)
Artikel Jurnal
Artikel Jurnal
Melady, Thomas Patrick, author
Macmillan, 1961
Buku Teks