Braucher, Robert, author
Foundation Press, 1958
Buku Teks
general editors, Robert Goldspink and Jeremy Cole
Sweet & Maxwell, 2002
Buku Teks
Sudargo Gautama, author
Citra Aditya Bakti, 1998
Buku Teks
Ryder, Nicholas, author
Cambridge University Press , 2012
Buku Teks
Hung, William S.H., author
[Publisher not identified], 1932
Buku Teks