Spacks, Patricia Meyer, author
Wiley-Blackwell, 2009
Buku Teks
Sitter, John, author
Cambridge University Press, 2011
eBooks
Richter, David H., 1945-, author
Wiley Blackwell, 2017
Buku Teks
David Fairer, Christine Gerrard.
Wiley-Blackwell, 2015
Buku Teks
Smith, D. N.
Clarendom Press, 1951
Buku Teks