Silverio, R. S., Aguirre, V. V. M., & Santos, H. H. (2011). A survey on the sustainable library practices and trends of selected academic libraries in Metro Manila. School of Library and Information Studies, University of the Philippines Diliman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Silverio, Rochelle S., Vyva Victoria M. Aguirre, و Herminia H. Santos. A Survey on the Sustainable Library Practices and Trends of Selected Academic Libraries in Metro Manila. Quezon City: School of Library and Information Studies, University of the Philippines Diliman, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Silverio, Rochelle S., et al. A Survey on the Sustainable Library Practices and Trends of Selected Academic Libraries in Metro Manila. School of Library and Information Studies, University of the Philippines Diliman, 2011.