Gaya APA
Barringer, B, R. (2009).
Preparing Effective Business Plans: An Entrepreneurial Approach (Pearson International Edition).
New Jersey:
Pearson Prentice Hall.
Gaya MLA
Barringer, Bruce, R..
"Preparing Effective Business Plans: An Entrepreneurial Approach".
Pearson International Edition
New Jersey:
Pearson Prentice Hall,
2009.
Textbook.