edited by Patrick De Pelsmacker
Emerald, 2016
eBooks
Artikel Jurnal
edited by, Wayne B. Jonas, Cindy C. Crawford
Churchill Livingstone, 2003
Buku Teks
Marcel Das, Peter Ester, Lars Kaczmirek, editor
Routledge, 2011
Buku Teks
Basic Books , 1963
Buku Teks