Walton, N. E., Hirsch, T. J., & Rowan, N. J. (1972). Evaluation of breakaway lightpoles for use in highway medians. Texas Transportation Institute.
Chicago-viite (17. p.)Walton, Ned E., T. J. Hirsch, ja Neilon J. Rowan. Evaluation of Breakaway Lightpoles for Use in Highway Medians. College Station: Texas Transportation Institute, 1972.
MLA-viite (8. p.)Walton, Ned E., et al. Evaluation of Breakaway Lightpoles for Use in Highway Medians. Texas Transportation Institute, 1972.
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