APA (7th ed.) Citation

United States. Bureau of Public Roads, Norton, R. A., & Ramser, C. E. (1931). Final report on run-off investigations in central Illinois. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Public Roads, Robert A. Norton, and C. E. Ramser. Final Report on Run-off Investigations in Central Illinois. Washington: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Bureau of Public Roads, et al. Final Report on Run-off Investigations in Central Illinois. [publisher not identified], 1931.