KAYNAKÇA

https://www.workcube.com/nedir-su-e-business-dedikleri

https://www.eticaretkitabi.com/e-is-modelleri/

https://www.slideshare.net/kobikobi/ei-nedir

https://kobitek.com/e-is_sureclerinin_uygulama_alanlari

https://e-is-modelleri.blogspot.com.tr/