Gaya APA
Zikmund, William G.. (2013).
Business Research Methods (9th Edition).
:
Cengage Learning.
Gaya Chicago
Zikmund, William G..
Business Research Methods.
9th Edition
:
Cengage Learning,
2013.
Text.
Gaya MLA
Zikmund, William G..
Business Research Methods.
9th Edition
:
Cengage Learning,
2013.
Text.
Gaya Turabian
Zikmund, William G..
Business Research Methods.
9th Edition
:
Cengage Learning,
2013.
Print.