APA (7th ed.) Citation

Sharp, A. M., Leftwich, R. H., & Register, C. A. (1990). Economics of social issues (9th ed.). Irwin.

Chicago Style (17th ed.) Citation

Sharp, Ansel Miree, Richard H. Leftwich, and Charles A. Register. Economics of Social Issues. 9th ed. Homewood, Ill: Irwin, 1990.

MLA (9th ed.) Citation

Sharp, Ansel Miree, et al. Economics of Social Issues. 9th ed. Irwin, 1990.