Artikel Jurnal
Weale, Putnam, author
Macmillan, 1905
Buku Teks
Ainul Qalbi, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2016
UI - Skripsi (Membership)
Furet, Francois, author
Gadjah Mada University Press, 1989
Buku Teks
Oguma, Eiji, 1962-, author
International House of Japan, 2018
Buku Teks