Dictionaries provide definitions of words, thus helping to clarify terminology used in the field.
Encyclopedias are alphabetically arranged collections of articles that provide background information on key concepts, theories, and measures. They are a great place to start exploring a paper topic. Here are just a few.
Handbooks in psychology are quick sources of facts and can supplement encyclopedia articles by providing detailed summaries of broad topics in the field.
You can find many useful handbooks via NUsearch by doing a keyword search for the terms handbook and psychology limited to the title.
Some examples of handbooks are: