Crawford, Martin
Tata McGraw-Hill, 1976
Buku Teks
Exiandri Primo Guttoro, author
Fakultas Teknik Universitas Indonesia, 2022
UI - Skripsi (Membership)
French, Hilary F.
Worldwatch Institute , 1990
Buku Teks
Patty, O.F.
Jakarta Erlangga 1995,
Buku Teks
Agus Rubiyanto, author
1993
UI - Tesis (Membership)