Rowan, N. J., & Walton, N. E. (1972). Roadway illumination systems: Final report. Texas Transportation Institute, Texas A & M University.
Cita Chicago (17th ed.)Rowan, Neilon J., i Ned E. Walton. Roadway Illumination Systems: Final Report. College Station: Texas Transportation Institute, Texas A & M University, 1972.
Cita MLA (8th ed.)Rowan, Neilon J., i Ned E. Walton. Roadway Illumination Systems: Final Report. Texas Transportation Institute, Texas A & M University, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.