APA (7th ed.) Citation

Cohen, M. L., Berring, R. C., & Olson, K. C. (1989). How to find the law (9th ed.). West.

Chicago Style (17th ed.) Citation

Cohen, Morris L., Robert C. Berring, and Kent C. Olson. How to Find the Law. 9th ed. St. Paul, Minn.: West, 1989.

MLA (8th ed.) Citation

Cohen, Morris L., et al. How to Find the Law. 9th ed. West, 1989.