Chevallier, Arnaud, author
Oxford University Press, 2016
eBooks
Gendell, Julien, author
West Publisihing, 1993
Buku Teks
American Psychological Association, 2004
Buku Teks
Johnson, Ken, author
John Wiley & Sons, 2004
Buku Teks
Melok Roro Kinanthi, author
2007
UI - Tesis (Membership)