Verkuyten, Maykel, author
Routledge, 2014
Buku Teks
Verkuyten, Maykel, author
Psychology Press Taylor & Francis Group, 2005
Buku Teks
Blackwell , 2004
eBooks
Mavroudi, Elizabeth, author
Routledge, 2016
Buku Teks
Council for Research in Values and Philosophy, 2005
Buku Teks