APA (7th ed.) Citation

Dennis, L. E., & Onion, M. L. (1990). Out in front: Effective supervision in the workplace. National Safety Council.

Chicago Style (17th ed.) Citation

Dennis, Leslie E., and Meredith L. Onion. Out in Front: Effective Supervision in the Workplace. [Chicago, Ill.]: National Safety Council, 1990.

MLA (9th ed.) Citation

Dennis, Leslie E., and Meredith L. Onion. Out in Front: Effective Supervision in the Workplace. National Safety Council, 1990.