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Lua i Stíl Chicago (17ú heag.)Ulberg, Cyrus G. Issues in the Shift from Regional to Local Provision of Bus Service. Washington, D.C: Transportation Research Board, National Research Council, 1990.
Lua MLA (9ú heag.)Ulberg, Cyrus G. Issues in the Shift from Regional to Local Provision of Bus Service. Transportation Research Board, National Research Council, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.