I. Ebrary Academic International Colletion- http://www.ebrary.com

II.Oxford English Dictionary Online (OED)- http://www.oed.com

III.Oxford Reference Online (ORO)- http://www.oxfordreference.com

IV.Oxford Scholarship Online-http://www.oxfordscholarship.com/oso/public/

V.Britanica Online-http://www.britannica.com

VI.IBSS (International Bibliography of the Social Science)-http://www.lse.ac.uk/colletions/IBSS/Default.htm

V.MUSE-http://muse.jhu.edu/