Gaya APA
Arehart. (2002).
Professional WAP .
UNITED STATES OF AMERICA:
Wrox.
Gaya Chicago
Arehart.
Professional WAP.
UNITED STATES OF AMERICA:
Wrox,
2002.
Text.
Gaya MLA
Arehart.
Professional WAP.
UNITED STATES OF AMERICA:
Wrox,
2002.
Text.
Gaya Turabian
Arehart.
Professional WAP.
UNITED STATES OF AMERICA:
Wrox,
2002.
Print.