Kerta, Johan Muliadi, David Wennoris, Tonny Gunawan, and Erny Erny. 2010. “Analisa Dan Perancangan Jaringan Berbasis VPN Pada PT. Finroll”. ComTech: Computer, Mathematics and Engineering Applications 1 (2):737-48. https://doi.org/10.21512/comtech.v1i2.2576.