<https://hascoding.com/makale/e-ticaret/e-ticarette-musteri-merkezliligin-onemi-8169>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hascoding.com/makale/e-ticaret/e-ticarette-musteri-merkezliligin-onemi-8169>