Cita APA (7th ed.)
Walker, H. D. (1971). Market power and price levels in the ethical drug industry. Indiana University.
Cita Chicago (17th ed.)
Walker, Hugh D. Market Power and Price Levels in the Ethical Drug Industry. Bloomington: Indiana University, 1971.
Cita MLA (9th ed.)
Walker, Hugh D. Market Power and Price Levels in the Ethical Drug Industry. Indiana University, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.