Jacob A. Belzen, editor
[Springer, ], 2012
eBooks
Argyle, Michael, author
Routledge & Kegan Paul, 2000
Buku Teks
Spilka, Bernard., author
The Guilford press, 2003
Buku Teks
Swan, Terry, author
Guardian Books, 2006
Buku Teks
Paloutzian, Raymond F., 1945-, author
Guilford Press, 2017
Buku Teks