editor, Susanne Wasum-Rainer, Ingo Winkelmann, Katrin Tiroch
Springer, 2012
eBooks
Byers, Michael, author
Cambridge University Press, 2013
Buku Teks
Ministry of Foreign Affairs The Netherlands, 2004
Buku Referensi
National Academy of Sciences-National Academy of Engineering , 1973
Buku Teks
Gheorghe Adam, editor
[, Springer-Verlag], 2012
eBooks