Pietrzak, Theodore, author
[American Society for Training and Development Press;;, ], 2005
eBooks
Adrienne, Carol, author
Hikmah, 2007
Buku Teks
Zufelt, Jack M, author
Interaksara, 2004
Buku Teks
Woods, Ciara
Erlangga, 2007
Buku Teks
Hubbard, L. Ron, 1911-1986, author
The Hubbard Association of Scientologists International, 1958
Buku Teks