Weaver, David, author
John Wiley & Sons, 2014
Buku Teks
Page, Stephen J.
Elsevier , 2009
Buku Teks
edited by Metin Kozak, Nazmi Kozak
Emerald, 2016
eBooks
edited by Wendu Nuryanti
Gadjah Mada University Press, 1997
Buku Referensi
Inkson, Clare, author
Sage, 2018
Buku Teks