Ray, James Arthur
Harmonic wealth: the secret of attracting the life you want = kekayaan harmonis rahasia menciptakan kehidupan yang anda inginkan
Gramedia Pustaka Utama, 2009
 Buku Teks SO
Gawain, Shakti
Creative visualization ; use the power of your imaginatin to create what you want in your life
Whatever Publisher, 2002
 Buku Teks SO
Lancaster, F. Wilfrid
If you want to evaluate your library
The Library Association, 1988
 Buku Teks SO
Lancaster, F. Wilfrid
If you want to evaluate your library
Uninersity of Illinois, 1993
 Buku Teks SO
If you want to study the United States
 Buku Teks