Gaya APA
Illinois Entrepreneurs. (2011).
Boston:
Harvard Business School Publishing Corporation.
Gaya Chicago
Illinois Entrepreneurs.
Cet.2.
Boston:
Harvard Business School Publishing Corporation,
2011.
.
Gaya MLA
Illinois Entrepreneurs.
Cet.2.
Boston:
Harvard Business School Publishing Corporation,
2011.
.
Gaya Turabian
Illinois Entrepreneurs.
Boston:
Harvard Business School Publishing Corporation,
2011.
.