Duncan, Peter, author
Sage, 2014
Buku Teks
Springer, 2012
eBooks
edited by Alberto Frigerio
Elsevier , 1983
Buku Teks
Gunter K. Stahl, Ingmar Bjorkman, Shad Morris, editors
Edward Elgar, 2012
Buku Teks
Hill, Norman, author
Harper & Brothers, 1952
Buku Teks