Croney, P. (1997). The Design And Performance Of Road Pavements Paul Croney, David Croney. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Croney, Paul. The Design And Performance Of Road Pavements Paul Croney, David Croney. McGraw-Hill, 1997.
Lua MLA (8ú heag.)Croney, Paul. The Design And Performance Of Road Pavements Paul Croney, David Croney. McGraw-Hill, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.