Artikel Jurnal
Collier, John G. (John Greenwood), author
McGraw-Hill, 1972
Buku Teks
Olver, F. W. J.
Academic Press, 1974
Buku Teks
Djulio Rahmawan, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
Poppy Ramadhani, author
2016
UI - Tesis (Membership)