“KAJIAN INVESTASI IMPLEMENTASI PUSH E-MAIL DI PERUSAHAAN EPCC DENGAN METODE REAL OPTION VALUATION: STUDI KASUS PADA PT. REKAYASA INDUSTRI”. Jurnal Sistem Informasi 4, no. 1 (July 12, 2012): 59–66. Accessed July 4, 2024. https://jsi-test.pusilkom.com/index.php/jsi/article/view/246.