APA (7th ed.) Citation

Irwin, McKenzie, R., & Tullock, G. (1985). The new world of economics: Explorations into the Human experience. Irwin.

Chicago Style (17th ed.) Citation

Irwin, R. McKenzie, and G. Tullock. The New World of Economics: Explorations into the Human Experience. Illinois: Irwin, 1985.

MLA (8th ed.) Citation

Irwin, et al. The New World of Economics: Explorations into the Human Experience. Irwin, 1985.