O'Sullivan, P. M. (1980). Transport policy: Geographic and economic planning aspects. Batsford Academic and Educational.
Lua i Stíl Chicago (17ú heag.)O'Sullivan, Patrick Michael. Transport Policy: Geographic and Economic Planning Aspects. London: Batsford Academic and Educational, 1980.
Lua MLA (9ú heag.)O'Sullivan, Patrick Michael. Transport Policy: Geographic and Economic Planning Aspects. Batsford Academic and Educational, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.