Arden, Paul, author
Phaidon, 2003
Buku Teks
Vanheste, Bert
Querido , 1989
Buku Teks
Brown, Kerry, 1967-, author
I.B. Tauris, 2017
Buku Teks
Scott, Gini Graham, author
American Management Association, 2009
eBooks
Mann, Jen, author
Random House Publishing Group, 2015
Buku Teks