Chenery, R. (1979). A comparative study of planning considerations and constraints affecting touirsm projects in the principal European capitals. British Travel Educational Trust.
Lua i Stíl Chicago (17ú heag.)Chenery, Robert. A Comparative Study of Planning Considerations and Constraints Affecting Touirsm Projects in the Principal European Capitals. London: British Travel Educational Trust, 1979.
Lua MLA (9ú heag.)Chenery, Robert. A Comparative Study of Planning Considerations and Constraints Affecting Touirsm Projects in the Principal European Capitals. British Travel Educational Trust, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.