Hodgkinson, J. R. (1981). Domestic crossovers & driveways: Design & construction in interlocking concrete. Cement and Concrete Association of Australia.
Lua i Stíl Chicago (17ú heag.)Hodgkinson, J. R. Domestic Crossovers & Driveways: Design & Construction in Interlocking Concrete. [North Sydney, N.S.W.]: Cement and Concrete Association of Australia, 1981.
Lua MLA (8ú heag.)Hodgkinson, J. R. Domestic Crossovers & Driveways: Design & Construction in Interlocking Concrete. Cement and Concrete Association of Australia, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.