Artikel Jurnal
Soetaryo Sigit, author
Department of Minessota , 1977
Buku Teks
editors, Donald D. Carr, Norman Herz
Pergamon Press, 1989
Buku Referensi
M.T. Zen, author
Yayasan Obor Indonesia , 1984
Buku Teks
Raditya Putra Nugraha, author
Universitas Indonesia, 2017
UI - Tesis (Membership)