162 online reference books from numerous publishers. Includes audio and images. One example is the Handbook of Research on the Education of Young Children.
Mental Measurements Yearbook
A guide to standardized psychological and educational tests. Includes references to reviews, information about the tests, and how to obtain them.
Includes 100 Oxford University Press dictionaries, encyclopedias, and other reference works in a variety of fields. Titles can be searched separately or across the entire databases. One example is the Oxford Companion to the Mind.