Baily, Peter, author
Gower Press, 1970
Buku Teks
Battersby, Albert, author
Erlangga, 1976
Buku Teks
Carrol, Phil, author
New York, N.Y., McGraw-Hill
Buku Teks
Dudick, Thomas S.
John Wiley & Sons, 1979
Buku Teks
Harahap, Batara T., author
Fakultas Teknik Universitas Indonesia, 1997
UI - Skripsi (Membership)