International Knowledge Sharing Platform http://iite.org
African Digital Research Repositories https://www.internationalafricaninstitute.org/repositories.html
Pdf Drive https://www.pdfdrive.com/
NOUN e-Courseware Instructions https://nou.edu.ng/e-courseware/
JSTOR https://www.jstor.org
Directory of Open Access Journalshttps://www.doaj.org/
African Journals Online https://www.ajol.info/index.php/ajol
CORE https://core.ac.uk
Google Scholar https://scholar.google.com/
ResearchGate https://www.researchgate.net/
FreeBooks freebookcentre.net.