SALTER, R. (1988). Highway Design Construction R.j Salter. Macmillan.
Lua i Stíl Chicago (17ú heag.)SALTER, R.J. Highway Design Construction R.j Salter. Macmillan, 1988.
Lua MLA (8ú heag.)SALTER, R.J. Highway Design Construction R.j Salter. Macmillan, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.