AGUS WALUYO10.01.53.0188. “SISTEM RESERVASI ONLINE VILLA PROMAS GREENLAND GONOHARJO MENGGUNAKAN FRAMEWORK CODEIGNITER”. Information Technology and Telematics 4, no. 2 (March 30, 2015). Accessed July 23, 2024. https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/2713.