SHARP, A. M. (1982). Economics of social issues. Irwin.
Cita Chicago (17th ed.)SHARP, Ansel M. Economics of Social Issues. Illinois: Irwin, 1982.
Cita MLA (9th ed.)SHARP, Ansel M. Economics of Social Issues. Irwin, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.