Cita APA (7th ed.)
Sharpe, W. F. (1969). The economics of computers. Columbia University Press.
Cita Chicago (17th ed.)
Sharpe, William F. The Economics of Computers. New York: Columbia University Press, 1969.
Cita MLA (9th ed.)
Sharpe, William F. The Economics of Computers. Columbia University Press, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.