edited by Donald Watson
McGraw-Hill, 1979
Buku Teks SO
O`Callaghan, Paul W.
Pergamon Press, 1978
Buku Teks SO
Roytman, M. Ya
New Delhi: Amerind, 1975
Buku Teks
Asean -Ec Energy Management Training and Research Centre, 1997,
Buku Referensi
Levin, Arthur H.
Builder's Book, 1999
Buku Teks SO