Simmonds, N.E.
Sweet & Maxwell, 1986
Buku Teks
Moore, Victor
Blackstone, 1997
Buku Teks
Bodenheimer, Edgar
Harvard University Press, 1976
Buku Teks
Dentreves, A.P.
Hutchinson`s University Library, 1951
Buku Teks
Jaap Hage, Antonia Waltermann, Bram Akkermans, editors
Springer International Publishing, 2017
eBooks