Ong, DeWitt G.
McGraw-Hill, 1984
Buku Teks
Elliott, David J.
McGraw-Hill, 1986
Buku Teks
Clyde F. Coombs, editor-in-chief
McGraw-Hill, 1979
Buku Referensi
L. Widodo
Fakultas Teknik Universitas Indonesia, 2004
UI - Skripsi (Membership)
Lund, Preben
John Wiley & Sons, 1978
Buku Teks