Cruz, R. G. (2003). Towards sustainable tourism development in the Philippines and other Asean countries: An examination of programs and practices of national tourism organizations. Philippine APEC Study Network.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cruz, Reil G. Towards Sustainable Tourism Development in the Philippines and Other Asean Countries: An Examination of Programs and Practices of National Tourism Organizations. Makati City: Philippine APEC Study Network, 2003.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cruz, Reil G. Towards Sustainable Tourism Development in the Philippines and Other Asean Countries: An Examination of Programs and Practices of National Tourism Organizations. Philippine APEC Study Network, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.