Asphalt Institute. (1991). Thickness design asphalt pavement for highways and streets. Asphalt Institute.
Citazione stile Chigago Style (17a edizione)Asphalt Institute. Thickness Design Asphalt Pavement for Highways and Streets. Lexington: Asphalt Institute, 1991.
Citatione MLA (9a ed.)Asphalt Institute. Thickness Design Asphalt Pavement for Highways and Streets. Asphalt Institute, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.