Sharp, A. M., Register, C. A., & Leftwich, R. H. (1988). Economics of social issues (8th ed.). BPI/Irwin.
芝加哥风格引文Sharp, Ansel Miree, Charles A. Register, 与 Richard H. Leftwich. Economics of Social Issues. 8th ed. Homewood, IL: BPI/Irwin, 1988.
MLA引文Sharp, Ansel Miree, et al. Economics of Social Issues. 8th ed. BPI/Irwin, 1988.
警告：这些引文格式不一定是100％准确.