Fakultas Teknik Universitas Indonesia, 2000
UI - Tugas Akhir
Sembiring, Bremin, author
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Gates, Stephen C.
Prentice-Hall, 1989
Buku Teks
Keyes, Ruth A., author
Prentice-Hall, 1986
Buku Teks
Shapiro, Neil L.
McGraw-Hill, 1983
Buku Teks