APA (7th ed.) Citation

O'Neil, P., Shade, E. D., & Miller, R. J. (1984). Essentials of economics. Longman Cheshire.

Chicago Style (17th ed.) Citation

O'Neil, P., E. D. Shade, and R. J. Miller. Essentials of Economics. Melbourne: Longman Cheshire, 1984.

MLA (9th ed.) Citation

O'Neil, P., et al. Essentials of Economics. Longman Cheshire, 1984.