Natividad, K. C. V., Obille, K. L. B., & Cabbab, J. F. A. (2017). Evaluation of digital reference services among academic and research libraries in Metro Manila towards the development of digital reference service guidelines for the Philippines. School of Library and Information Studies, University of the Philippines Diliman.
Чикаго стиль цитування (17-те видання)Natividad, Karen Cecille V., Kathleen Lourdes B. Obille, та Johann Frederick A. Cabbab. Evaluation of Digital Reference Services Among Academic and Research Libraries in Metro Manila Towards the Development of Digital Reference Service Guidelines for the Philippines. Quezon City: School of Library and Information Studies, University of the Philippines Diliman, 2017.
Стиль цитування MLA (9-ме видання)Natividad, Karen Cecille V., et al. Evaluation of Digital Reference Services Among Academic and Research Libraries in Metro Manila Towards the Development of Digital Reference Service Guidelines for the Philippines. School of Library and Information Studies, University of the Philippines Diliman, 2017.