Gaya APA
Riyanto, (2012).
Serba gratis : email, mesengger, blog, domain, hosting, CMS for blog & e-commerce (Cet.1).
Yogyakarta :
Gava Media.
Gaya MLA
Riyanto, .
Serba gratis : email, mesengger, blog, domain, hosting, CMS for blog & e-commerce.
Cet.1
Yogyakarta :
Gava Media,
2012.
Text.