Dickinson, Markus, author
Wiley-Blackwell, 2013
Buku Teks
Masterman, Margaret, author
Cambridge University Press, 2005
eBooks
edited by Alexander Clark, Chris Fox and Shalom Lappin
Wiley-Blackwell, 2013
Buku Teks
Borin, Lars, author
Springer, 2012
eBooks
Krek, Simon, editor
Springer, 2012
eBooks