Gaya APA

Riyanto, . (2012). Serba Gratis : E-Mail, Messenger, Blogging, Domain, Hosting, CMS for Blog & E-Commerce (cet. 1). New York: Universitas Negeri Yogyakarta.

Gaya MLA

Riyanto, . "Serba Gratis : E-Mail, Messenger, Blogging, Domain, Hosting, CMS for Blog & E-Commerce". cet. 1 New York: Universitas Negeri Yogyakarta, 2012. Text.