ScienceDirect : www.sciencedirect.com

Wiley : http://onlinelibrary.wiley.com

ProQuest : https://www.proquest.com

Ebsco : https://search.ebscohost.com

Note: The links listed can only be accessed while on the campus of the National Development University “veteran” Yogyakarta or when accessing the wifi provided by the campus. For E-Journals that require login first, you can access the account and password on the HMTA website.