·         Open Access Theses 

·         CORE- Open Access Research Papers

·         HighWire 

·         Directory of Open Access Journals DOAJ 

·         Directory of Open Access Repositories DOAR 

·         Japan Science and Technology Information Aggregator Electronic J-STAGE  

·         OpenStax (e-Books)  

·         Urban Water Blueprint (International Water Association (IWA)) 

·         Protecting surface water for health (World Health Organization)

·         Potable reuse :Guidance for producing for safe drinking-water (World Health Organization)

·         Steel:my (Malaysian Structural Steel Association) 

·       Annual Report 2016/2017 (International Water Association (IWA))