https://drive.google.com/open?id=0B58hKTwF57hrbDFMZlE4UEtveG8
Sumber :
- http://seputar-info-it.blogspot.co.id/2015/03/sistem-temu-kembali-informasi.html
- http://repository.usu.ac.id/bitstream/handle/123456789/22811/Chapter%20II.pdf?sequence=4
- http://sugengpri.blog.undip.ac.id/files/2013/07/4.-MODEL-TBIE.pdf
- http://itmamblog.blogspot.co.id/2011/05/peranan-teknologi-informasi-dalam.html