Hamilton, R. S., & Harrison, R. M. (1991). Highway pollution. Elseiver Distributors for the United States and Canada, Elsevier Science Pub. Co.
Lua i Stíl Chicago (17ú heag.)Hamilton, Ronald S., agus Roy M. Harrison. Highway Pollution. Amsterdam, New York, New York, NY, U.S.A: Elseiver Distributors for the United States and Canada, Elsevier Science Pub. Co, 1991.
Lua MLA (9ú heag.)Hamilton, Ronald S., agus Roy M. Harrison. Highway Pollution. Elseiver Distributors for the United States and Canada, Elsevier Science Pub. Co, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.