edited by G.E. Gorman
Library Association Publishing, 2001
Buku Teks
edited by G.E. Gorman
Facet, 2005
Buku Teks
I. F. Dekker, E. Hey
T.M.C. Asser Press, 2012
eBooks
Holden, Robert, author
Laurence King Publishing, 1996
Buku Referensi
Colquhoun, Ian, author
B.T. Batsford, 1991
Buku Referensi