APA (7th ed.) Citation

Richardson, E. S., Barger, R. J., & Rosenbaum, R. E. (1980). Present aggregate gradation control practices and alternative test methods. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, Materials Division.

Chicago Style (17th ed.) Citation

Richardson, E. S., R. J. Barger, and R. E. Rosenbaum. Present Aggregate Gradation Control Practices and Alternative Test Methods. Washington: Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, Materials Division, 1980.

MLA (9th ed.) Citation

Richardson, E. S., et al. Present Aggregate Gradation Control Practices and Alternative Test Methods. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, Materials Division, 1980.