Chenery, R. (1979). A comparative study of planning considerations and constraints affecting touirsm projects in the principal European capitals. British Travel Educational Trust.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chenery, Robert. A Comparative Study of Planning Considerations and Constraints Affecting Touirsm Projects in the Principal European Capitals. London: British Travel Educational Trust, 1979.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Chenery, Robert. A Comparative Study of Planning Considerations and Constraints Affecting Touirsm Projects in the Principal European Capitals. British Travel Educational Trust, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.