APA (7th ed.) Citation

Parham, A. H., Carroll, R. W., & Fambro, D. B. (2003). Enhanced sign systems at passive highway-railroad grade crossings. Texas Transportation Institute, Texas A & M University System.

Chicago Style (17th ed.) Citation

Parham, Angelia H., Randy W. Carroll, and Daniel B. Fambro. Enhanced Sign Systems at Passive Highway-railroad Grade Crossings. College Station, Tex.: Texas Transportation Institute, Texas A & M University System, 2003.

MLA (9th ed.) Citation

Parham, Angelia H., et al. Enhanced Sign Systems at Passive Highway-railroad Grade Crossings. Texas Transportation Institute, Texas A & M University System, 2003.