S.Kom., M.Pd., Kurniawati, AND 		Ristanto, Riska.
" Dampak dari Kondisi Persaingan Pasar di Perusahaan Penyedia Voucher Game Online UniPin Analisis dengan Menggunakan Michael Porter's Competitive Forces and Strategies Model" <em>Journal of System Information Technology and Electronics Engineering (J-SITEE)</em> [Online], Volume 1 Number 1 (31 July 2021)