Hutapea, Immanuel Nunut
Fakultas Teknik Universitas Indonesia, 2019
UI - Skripsi Membership
Gildenberg, Robert F.
Melville Publishing , 1974
Buku Teks SO
Buchsbaum, Walter H.
Prentice-Hall, 1977
Buku Teks
Lieberman, Norman P.
McGraw-Hill, 1997
Buku Referensi
Allen & Unwin, 1992
Buku Teks