CAMPBELL, D. G. (1965). Understanding stocks: A tutor text. Doubleday.
Cita Chicago (17th ed.)CAMPBELL, Don G. Understanding Stocks: A Tutor Text. New York: Doubleday, 1965.
Cita MLA (9th ed.)CAMPBELL, Don G. Understanding Stocks: A Tutor Text. Doubleday, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.