Grigg, A. O., & Huddart, L. (1978). Three surveys of the visual intrusion of roads in rural landscapes. Transport and Road Research Laboratory.
Citace podle Chicago (17th ed.)Grigg, A. O., a L. Huddart. Three Surveys of the Visual Intrusion of Roads in Rural Landscapes. Crowthorne, [Eng.]: Transport and Road Research Laboratory, 1978.
Citace podle MLA (9th ed.)Grigg, A. O., a L. Huddart. Three Surveys of the Visual Intrusion of Roads in Rural Landscapes. Transport and Road Research Laboratory, 1978.
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