Fox, Annette Baker, 1912-, author
The University of Chicago Press, 1959
Buku Teks
Steingold, Attorney Fred S., author
Nolo, 2006
Buku Teks
Hancock, William A., author
McGraw-Hill, 1982
Buku Teks
Spellman, Susan V., author
Oxford University Press, 2016
eBooks
Siahaan, Richard Pardomuan Parulian, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2010
UI - Tesis (Open)