Djati Kerami, author
Universitas Terbuka, 2008
Buku Teks
Javaher, James N., author
MrCutrhan, 1967
Buku Teks
White, Paul A., author
Dickenson, 1966
Buku Teks
Bapat, R.B., author
[Springer, ], 2012
eBooks
Robertson, S. Ian, author
Psychology Press, 2001
Buku Teks