UNESCO, 1974
Buku Teks
United Nations Educational, Scientific and Cultural Organization, 1977
Buku Teks
Sidanius, Jim, author
Cambridge Uiversity Press, 1999
Buku Teks
Amarina Ashar Ariyanto, author
Fakultas Psikologi Universitas Indonesia, 2011
Artikel Jurnal
Amarina Ashar Ariyanto, author
Fakultas Psikologi Universitas Indonesia, 2011
Artikel Jurnal