Carino, L. V., & Gaffud, D. D. (2007). What they contribute: Case studies on the impact of nonprofit organizations. Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carino, Ledivina V., و Dolores D. Gaffud. What They Contribute: Case Studies on the Impact of Nonprofit Organizations. Quezon City: Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines, 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Carino, Ledivina V., و Dolores D. Gaffud. What They Contribute: Case Studies on the Impact of Nonprofit Organizations. Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines, 2007.