Lamberton, Damien, author
Chapman & Hall/CRC , 2008
Buku Teks
Hayes, Andrew F., author
The Guilford Press , 2013
Buku Teks
Santoso Wijaya Sugandi, author
Universitas Indonesia, 2008
UI - Skripsi (Open)
Ratno Dwi Santoso, author
Andi, 1992
Buku Teks
Sugiarto, author
Andi , 1992
Buku Teks