APA (7th ed.) Citation

Irwin, Ivancevich, J., & Skinner, S. (1992). Business: For the 21st century. Irwin.

Chicago Style (17th ed.) Citation

Irwin, J. Ivancevich, and S. Skinner. Business: For the 21st Century. Boston: Irwin, 1992.

MLA (8th ed.) Citation

Irwin, et al. Business: For the 21st Century. Irwin, 1992.