Mutia Oktavianingsih
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
UI - Skripsi Membership
Jansen, Marius B.
Rand Mc.Nally College Publishing , 1975
Buku Teks SO
Buss, Claude Albert
Macmillan, 1941
Buku Teks SO
Youli, Sun
St. Martin's Press, 1993
Buku Teks SO
King-Hall, Stephen
Methuen, 1924
Buku Teks SO