Gaya APA
Riyanto, . (2012).
Serba Gratis:E-mail, Massenger, Blog, Domain, Hosting, Cmsforblog&e-Commerce .
Yogyakarta:
Gava Media.
Gaya MLA
Riyanto, .
"Serba Gratis:E-mail, Massenger, Blog, Domain, Hosting, Cmsforblog&e-Commerce".
Yogyakarta:
Gava Media,
2012.
Text.