Teh , Penny, and Siti Hamidah Husain. “Strategizing Effective Maintenance Strategies for Air Conditioning Systems in Commercial Buildings in Malaysia: A Systematic Literature Review”. Journal of Advanced Research Design 118, no. 1 (August 5, 2024): 42–55. Accessed September 18, 2024. https://akademiabaru.com/submit/index.php/ard/article/view/5423.