Gaya APA
Shepherd, W, G. (1997).
The economics of industrial organization: analysis, markets, policies (4th Ed.).
New Jersey:
Prantice-Hall Internatonal.
Gaya MLA
Shepherd, William, G..
"The economics of industrial organization: analysis, markets, policies".
4th Ed.
New Jersey:
Prantice-Hall Internatonal,
1997.
Text.