Jordan, P. G. (1984). Measurement and assessment of unevenness on major roads. Transport and Road Research Laboratory.
Chicago-referens (17:e uppl.)Jordan, P. G. Measurement and Assessment of Unevenness on Major Roads. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1984.
MLA-referens (8:e uppl.)Jordan, P. G. Measurement and Assessment of Unevenness on Major Roads. Transport and Road Research Laboratory, 1984.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.