Shepard, F. D. (1996). Reduced visibility due to fog on the highway. National Academy Press.
Citace podle Chicago (17th ed.)Shepard, Frank D. Reduced Visibility Due to Fog on the Highway. Washington, D.C: National Academy Press, 1996.
Citace podle MLA (9th ed.)Shepard, Frank D. Reduced Visibility Due to Fog on the Highway. National Academy Press, 1996.
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