Cita APA (7a ed.)

Sharp, A. M. (1988). Economics of social issues (8th ed.). IRWIN.

Cita Chicago Style (17a ed.)

Sharp, Ansel M. Economics of Social Issues. 8th ed. Homewood: IRWIN, 1988.

Cita MLA (9a ed.)

Sharp, Ansel M. Economics of Social Issues. 8th ed. IRWIN, 1988.