Langley, Anne, author
Chandos Publishing, 2006
Buku Teks
Chandos, 2014
eBooks
edited by Kylie Bailin, Benjamin Jahre, Sarah Morris
Chandos Publishing, 2018
Buku Teks
Brophy, Peter, author
Facet, 2002
Buku Teks
Wilson, Louis Round, author
Columbia University, 1956
Buku Teks