Gaya APA

SEO, D., WARMAN, G. (2012). User Satisfaction of E-government Procurement System in Developing Countries : . Jakarta: Puslit dan Pengemb SDM Kementrian Kominfo.

Gaya MLA

SEO, DongBack., WARMAN, Gumala. "User Satisfaction of E-government Procurement System in Developing Countries :". Jakarta: Puslit dan Pengemb SDM Kementrian Kominfo, 2012. Artikel.