The GeoRef database, established by the American Geological Institute (AGI) in 1966, provides access to the geoscience literature of the world. GeoRef is the most comprehensive AGI database in the geosciences and continues to grow by more than 60,000 references a year. The database contains over 2.2 million references to geoscience journal articles, books, maps, conference papers, reports and theses.

GSW is a comprehensive Internet resource for research and communications in the geosciences, built on a core database aggregation of peer-reviewed journals indexed, linked, and inter-operable with GeoRef.

AAPG/Datapages Online contains archives of all AAPG publications back to 1917.

Web of Science compiles articles from over 9,300 scholarly journals in all science disciplines. Users can easily find article references and other publications citing a particular work.

Scopus is the largest abstract and citation database of peer-reviewed literature: scientific journals, books and conference proceedings. Delivering a comprehensive overview of the world’s research output in the fields of science, technology, medicine, social sciences, and arts and humanities.

This multi-disciplinary database provides full text for more than 4,500 journals, including full text for more than 3,700 peer-reviewed titles.​

GreenFILE offers well-researched information covering all aspects of human impact to the environment. Topics covered include global climate change, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.

Gale In Context: Environmental Studies is an electronic resource that focuses on the study of sustainability and the environment. Topics include global warming, food safety, access to health care, and the impact of economic development on international relations.

Includes information of all kinds about periodical publications. On the journal page, look for the "refereed" line. If it says yes, then the journal is peer reviewed.

Includes impact factors and other statistical measures for over 7,000 journals in science and the social sciences.

Journals can be grouped by subject area, subject category, or by country. Citation data is drawn from over 21,500 titles from more than 5,000 international publishers and country performance metrics from 239 countries worldwide.