Cahyani, Nana, 		Indriyanto, Edo, AND 		Masripah, Siti.
" Uji Validitas dan Reabilitas Terhadap Implementasi Aplikasi Penjualan dan Pembelian" <em>INFORMATION SYSTEM FOR EDUCATORS AND PROFESSIONALS : Journal of Information System</em> [Online], Volume 1 Number 1 (1 December 2016)