Fisher, Ronald A., author
Oliver and Boyd, 1950
Buku Teks
Lawson, Tom R., author
Routledge, 2019
Buku Teks
Coolican, Hugh, author
Psychology Press, 2014
Buku Teks
Coolican, Hugh, author
Hodder & Stoughton, 2009
Buku Teks
Fisher, Ronald A., author
Hafner Press, 1970
Buku Teks