Gretzel, U., & Yoo, K. H. (2008). Use and impact of online travel reviews. Information and Communication Technologies in Tourism, 35-46.
Kandampully, J., Zhang, T., & Bilgihan, A. (2015). Customer loyalty: A review and future directions with a special focus on the hospitality industry. International Journal of Contemporary Hospitality Management, 27(3), 379-414.
Xiang, Z., Du, Q., Ma, Y., & Fan, W. (2017). A comparative analysis of major online review platforms: Implications for social media analytics in hospitality and tourism. Tourism Management, 58, 51-65.
Andi Offset. Kristanto, A. (2003). Perancangan Sistem Informasi dan Aplikasinya. yogyakarta: Gava Media.
Sutabri, T. (2004). Analisa dan Perancanga Sistem. Yogyakarta:
Andi. Sutabri.Tata S.Kom, M. (2004 ). Analisa Sistem Informasi. Edisi Pertama.yogyakarta: Andi.
Hariyanto, A. (2017). Membuat Aplikasi Computer Based Test dengan PHP
