Aksah, H., Che Ani, A.I., Johar, S. and Husain, S.H. 2023. Evaluating the Content Validity: Development of An Instrument for Measuring Functional Building Performance. International Journal of Global Optimization and Its Application. 2, 1 (Mar. 2023), 12–19. DOI:https://doi.org/10.56225/ijgoia.v2i1.161.