Elidjen, E. et al. 2011. Sistem Pelayanan Jasa dan Penjualan Produk Percetakan Berbasis Web pada Proposter Indonesia. ComTech: Computer, Mathematics and Engineering Applications. 2, 2 (Dec. 2011), 755–762. DOI:https://doi.org/10.21512/comtech.v2i2.2824.