Lynn J. Lopez, Chrystina, Jay A. Sario, and Ericson Z. Matias. “Assessment of Facilities Management Performance in Selected Real Estate Business: Basis for Crafting a Policy Framework”. International Journal of Social Science, Education, Communication and Economics (SINOMICS Journal) 1, no. 6 (February 13, 2023): 893–906. Accessed September 27, 2025. https://sinomicsjournal.com/index.php/sj/article/view/101.