Siegel, Curt, author
Universitas Parahyangan, [date of publication not identified]
Buku Teks
F. Christian J. Sinar Tanudjaja
Penerbit Universitas Atmajaya, 1991
Buku Teks
Schloeder, Steven J
Ignatius Press, 1990
Buku Teks
Mohammad Fazrin Rahman, author
Fakultas Teknik Universitas Indonesia, 2013
UI - Skripsi Membership
Johnson, Lyle R., author
Prentice-Hall, 1971
Buku Teks