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.