एपीए उद्धरण

Walker,Hugh D. (1971). Market power and price levels in the ethical drug industry. Indiana University Press.

शिकागो स्टाइल उद्धरण

Walker,Hugh D. Market Power and Price Levels in the Ethical Drug Industry. London: Indiana University Press, 1971.

एमएलए उद्धरण

Walker,Hugh D. Market Power and Price Levels in the Ethical Drug Industry. Indiana University Press, 1971.