“Potret Portal Islam Di Internet: Analisis Mesin Pencari Terhadap Portal NU Dan Muhammadiyah: Portrait of Islamic Portals on the Internet: Search Engine Analysis of NU and Muhammadiyah Portals”. Fenomena, vol. 12, no. 1, Apr. 2013, pp. 89-106, https://doi.org/10.35719/fenomena.v12i1.533.