Gulley, Halbert E., author
Holt, Rinehart and Wiston, 1960
Buku Teks
Galanes, Gloria J., author
McGraw-Hill, 2013
Buku Teks
Suzie Sri Suparin S. Sudarman, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, [Date of publication not identified]
UI - Makalah dan Kertas Kerja
Wenderlinus Imus, author
Universitas Indonesia, 2005
UI - Tesis (Membership)
Luh Putu Suta Haryanthi, author
Universitas Indonesia, 2015
UI - Tesis (Membership)