Helminen, Marjaana
Wolters Kluwer, 2010
Buku Teks
Helminen, Marjaana
Wolters Kluwer Law & Business, 2010
Buku Referensi
Lang, Michael
Kluwer Law International, 2007
Buku Teks
Tafsir Nurchamid
Department of Administration Sciences, Faculty of Social and Political Sciences, Universitas Indonesia, 2012
Artikel Jurnal
Beattie, C. N.
Stevens & Sons Lim. , 1957
Buku Teks