Helminen, Marjaana, author
Wolters Kluwer, 2010
Buku Teks
Artikel Jurnal
Vierdag, E.W.
Martinus Nijhoff, 1973
Buku Teks
Lautenbach, Geranne, author
Oxford Univ.press, 2014
Buku Teks
Paddeu, Federica, 1982-, author
Cambridge University Press, 2018
Buku Teks