Cita APA (7a ed.)

Sharp, A. M., Register, C. A., & Grimes, P. W. (2008). Economics of social issues (18th ed.). McGraw-Hill/Irwin.

Cita Chicago Style (17a ed.)

Sharp, Ansel Miree, Charles A. Register, y Paul W. Grimes. Economics of Social Issues. 18th ed. Boston: McGraw-Hill/Irwin, 2008.

Cita MLA (9a ed.)

Sharp, Ansel Miree, et al. Economics of Social Issues. 18th ed. McGraw-Hill/Irwin, 2008.