Gaya APA
BYGRAVE, W., ZACHARAKIS, A.
(2011).
Entrepreneurship
(
2th ed.)
.
America:
John Wiley & Sons.
Gaya MLA
BYGRAVE, William., ZACHARAKIS, Andrew.
"Entrepreneurship".
2th ed.
America:
John Wiley & Sons,
2011.
Buku.