Gaya APA
Ellsworth, J, H, E, M, V. (1997).
Marketing on the internet= Pemasaran di internet .
jakarta:
Grasindo.
Gaya MLA
Ellsworth, Jill, H., Ellsworth;, Matthew, V..
"Marketing on the internet= Pemasaran di internet".
jakarta:
Grasindo,
1997.
Text.