Gaya APA
Riyanto, . (2012).
Serba Gratis: E-Mail, Messenger, Blog, Domain, Hosting, CMS for Blog & e-Commerce (Cetakan I, 2012).
Yogyakarta:
Gava Media.
Gaya MLA
Riyanto, .
"Serba Gratis: E-Mail, Messenger, Blog, Domain, Hosting, CMS for Blog & e-Commerce".
Cetakan I, 2012
Yogyakarta:
Gava Media,
2012.
Text.