Andrew I. Cohen, Christopher Heath Wellman.
Wiley Blackwell, 2014
Buku Teks
edited by Marco Grix, Tim Dare
Emerald, 2016
eBooks
Altman, Matthew C
John Wiley & Sons, 2014
Buku Teks
Beauchamp, Tom L.
Oxford University Press, 2013
Buku Teks
White, Thomas I.
NJ John Wiley & Sons,, 2017
Buku Teks