Gaya APA
Shelly.dkk, . (2001).
BUSINESS DATA COMMUNICATIONS: INTRODUCTORY CONCEPTS AND TECHNIQUES (ed.3).
America:
Prentice-Hall.
Gaya MLA
Shelly.dkk, .
"BUSINESS DATA COMMUNICATIONS: INTRODUCTORY CONCEPTS AND TECHNIQUES".
ed.3
America:
Prentice-Hall,
2001.
Books.