edited by Donald Watson
McGraw-Hill , 1979
Buku Teks SO
Asean -Ec Energy Management Training and Research Centre, 1997,
Buku Referensi
Dubin, Fred S.
McGraw-Hill, 1978
Buku Teks SO
Maidina
Fakultas Teknik Universitas Indonesia, 2012
UI - Skripsi Open
Hayes, Denis
[T.t.] [T.p.] 1976
Buku Teks