E-RUJUKAN

• www.pdfdrive.net
• B-ok.org
• www.u-library.gov.my (u-pustaka)
• pnm.overdrive.com
• www.pnm.elib.com.my
• www.scholar.google.com
• www.refseek.com
• booksc.org
• academic.research.microsoft.com
• www.bing.com
• duckduckgo.com
• www.exalead.com/search/
• www.yandex.com
• www.zanran.com
• www.instya.com
• Dothop.com/home
• project.carrot2.org
• www.e-journals.org
• doaj.org
• www.scirp.org
• weldguru.com
• www.machanicalengineering.com
• www.engeneering.com
• www.worldskills.org
• elearningindustry.com
• www.accountingcoach.com
• www.free-ebooks.net
• openlibrary.org