BioMed Central
Coverage: varies. A publisher of over 200 peer-reviewed, open access journals in primarily the biological and medical sciences.
PsycArticles
Coverage: varies. Definitive source of searchable full-text, peer-reviewed, scholarly and scientific articles in psychology. Contains 59 journals – 48 published by the American Psychological Association (APA) and 11 from allied organizations.
Public Library of Science
Coverage: varies. Public Library of Science (PLoS) is an open access publisher of two online full-text, peer-reviewed journals: PLoS Biology and PLoS Medicine, publishing research articles in all areas of biology and medicine.
PubMed
Coverage: 1946-present. A service of the U.S. National Library of Medicine that includes over 20 million citations from MEDLINE and other life science journals for biomedical articles. PubMed includes links to full-text articles and other related resources.
PubMed Central
Coverage: varies. Free digital archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health (NIH).
