Dalisay, G. H. A., Yacat, J. A., & Navarro, A. M. (2004). Extending the self: Volunteering as pakikipagkapwa. Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Dalisay, Grace H. Aguiling, Jay A. Yacat, و Atoy M. Navarro. Extending the Self: Volunteering as Pakikipagkapwa. Quezon City: Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines, 2004.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Dalisay, Grace H. Aguiling, et al. Extending the Self: Volunteering as Pakikipagkapwa. Center for Leadership, Citizenship and Democracy, National College of Public Administration and Governance, University of the Philippines, 2004.