PubMed is comprised of millions of citations for the biomedical literature from MEDLINE, life science journals, and online books. Also provides access to other National Center for Biotechnology Information (NCBI) services for biomedical and genomic information. Added functionality available with personal account. Good for foreground questions.
Online bibliographic management system which allows users to gather, manage, store & share references as well as generate citations & bibliographies. Click the "Use login from my institution" option and login with Georgetown NetID credentials. Personal accounts required.