Pariaman Sinaga ... [and others]
RajaGrafindo Persada, 2008
Buku Teks
Cassese, Antonio, 1937-2011, author
Yayasan Obor Indonesia, 2005
Buku Teks
Nevid, Jeffrey, author
Erlangga, 2014
Buku Teks
Artikel Jurnal
Retno Handini, author
Galang Press, 2005
Buku Teks