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.
Chicago-referens (17:e uppl.)Silverio, Rochelle S., Vyva Victoria M. Aguirre, och 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.
MLA-referens (9:e uppl.)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.