Iftah Abdul Fatah, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2018
UI - Makalah dan Kertas Kerja
Deutsch, Kenneth L., author
Thomson, 2009
Buku Teks
edited by Isaac Kramnick
[publisher not identified], 1969
Buku Teks
Wanlass, Lawrence C., author
Appleton-Century-Crofts, 1953
Buku Teks
Sharma, R.P., author
Sterling Publishers Private, 1984
Buku Teks