Journal articles and books. Journal have with long backfile runs but lag with a 4-5 year moving wall.
Subject areas include African-American Studies, Anthropology, Asian Studies, Ecology, Economics, Mathematics, Philosophy, Political Science, Population/Demography, Education, Finance, History, Literature, Sociology, and Statistics.
Sage offers some of the most globally used and highly cited journals across disciplines such as psychology, sociology, business management, health science, environment and education.