Gaya APA
Seybold, Patricia. (1998).
Customer.com .
United States:
Time Business.
Gaya Chicago
Seybold, Patricia.
Customer.com.
United States:
Time Business,
1998.
Text.
Gaya MLA
Seybold, Patricia.
Customer.com.
United States:
Time Business,
1998.
Text.
Gaya Turabian
Seybold, Patricia.
Customer.com.
United States:
Time Business,
1998.
Print.