Lua APA (7ú heag.)

(1978). System Of Cities. Oxford University Press.

Lua i Stíl Chicago (17ú heag.)

System Of Cities. Oxford University Press, 1978.

Lua MLA (8ú heag.)

System Of Cities. Oxford University Press, 1978.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.