Mardiana, Mardiana, Ninda Lutfiani, and Rivialdo Sultan Saga. 2019. “The Online Sales Application Of Black And White Print Based On Yii Framework On Higher Education E-Commerce Website”. Aptisi Transactions on Technopreneurship (ATT) 1 (2):118-27. https://doi.org/10.34306/att.v1i2.47.