Gaya APA
Ford, Warwick. (1997).
Secure Electrionic Commerce .
New Jersey:
Prentice Hall.
Gaya Chicago
Ford, Warwick.
Secure Electrionic Commerce.
New Jersey:
Prentice Hall,
1997.
Text.
Gaya MLA
Ford, Warwick.
Secure Electrionic Commerce.
New Jersey:
Prentice Hall,
1997.
Text.
Gaya Turabian
Ford, Warwick.
Secure Electrionic Commerce.
New Jersey:
Prentice Hall,
1997.
Print.