Willrich, Mason
The Free Press, 1975
Buku Teks
Elsevier, 1976
Buku Teks
Foley, Gerald, author
Penguin Books, 1976
Buku Teks
Hutasoit, Nicolas, author
Fakultas Teknik Universitas Indonesia, 2013
UI - Tesis (Membership)
Doran, Charles F., author
Free Press, 1977
Buku Teks