Snyder, James C.
Erlangga, 1989
Buku Teks SO
oleh Agoes Arismunandar ... [and others]
Grolier International, 2002
Buku Teks SO
Yandi Andri Yatmo
UI-Press, 2014
UI - Pidato
Wilson, Forrest, 1918-
[Publisher not identified], [Date of publication not identified]
Buku Teks
Adinda Alissa Sastranegara
Fakultas Teknik Universitas Indonesia, 2004
UI - Skripsi Membership