Yumi Kitamura
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2017
Artikel Jurnal
Chen, Liu-Fu
Philosophical Library, 1948
Buku Teks SO
Sulliva, Robert
Time Warner Trade, 2001
Buku Teks
David, Maya Khemlani
Strategic Information and Research Development Centre, 2010
Buku Teks SO
Maududi, Abul A`la, supervisor
Lahore Islamic Publications, 1963
Buku Teks SO