Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Prideaux, Margi, author
Routledge, 2017
Buku Teks
Litta, Henriette, author
VS Verlag, 2012
eBooks
Michele M. Betsill, Elisabeth Corell, editor
MIT Press, 2008
Buku Teks
Pirages, Dennis C.
Duxbury Press, 1978
Buku Teks