APA (7th ed.) Citation

Coy, J., Clark, A. C., & Keers, S. (1970). Accounting case problems. Polytech Publishers.

Chicago Style (17th ed.) Citation

Coy, John, A. C. Clark, and S. Keers. Accounting Case Problems. Stockport, Eng.: Polytech Publishers, 1970.

MLA (8th ed.) Citation

Coy, John, et al. Accounting Case Problems. Polytech Publishers, 1970.