Purba, Laura Ninta br, Endah Wartiningsih, and Dewi Winarni Susyanti. “PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN PELANGGAN PT GLOBAL KNOWLEDGE INDONESIA”. Epigram 13, no. 2 (January 18, 2017). Accessed January 28, 2022. https://jurnal.pnj.ac.id/index.php/epigram/article/view/817.