Schneider, Susan C.
Prentice-Hall, 1997
Buku Teks
Helaine Selin
Springer Science, 2012
eBooks
edited by Chibueze C. Udeani ... [et al.]
Council for Research in Values and Philosophy,, 2006
Buku Teks
Harvard Business Review Press, 2016
Buku Teks
Smith, Peter B.
Harvester Wheatsheaf, 1993
Buku Teks