Organisation for Economic Co-operation and Development. Committee on Tourism, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2011). OECD studies on tourism: Italy : review of issues and policies. OECD.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. Committee on Tourism, Organisation for Economic Co-operation and Development, و ProQuest (Firm). OECD Studies on Tourism: Italy : Review of Issues and Policies. [Paris]: OECD, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. Committee on Tourism, et al. OECD Studies on Tourism: Italy : Review of Issues and Policies. OECD, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.