Transport and Road Research Laboratory & Powell, W. D. (1984). The structural design of bituminous roads. Transport and Road Research Laboratory.
Chicago-referens (17:e uppl.)Transport and Road Research Laboratory och W. D. Powell. The Structural Design of Bituminous Roads. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1984.
MLA-referens (9:e uppl.)Transport and Road Research Laboratory och W. D. Powell. The Structural Design of Bituminous Roads. Transport and Road Research Laboratory, 1984.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.