Gilson, Julie, author
St. Martin`s Press, 2000
Buku Teks
Roberts, John G.
Franklin Watts, 1971
Buku Teks
Scott, Robert B., 1965-, author
Cambridge University Press, 2016
Buku Teks
Markus R. Heinrich, editor
Springer, 2012
eBooks
Halliwell, Barry, author
Oxford University Press, 2015
Buku Teks