A useful starting point is to find background information in subject specific encyclopedias in Alverno's library. This will give you the vocabulary you need to expand your searching.
When using subject specific encyclopedias in Alverno's library first try looking up the name of your theorist in the index. The specific theory might be listed there as well. Here are some useful titles:
Encyclopedia of Educational Psychology by 
Encyclopedia of Human Development by 
Encyclopedia of Multicultural Psychology by 
Encyclopedia of Psychology by 
Encyclopedia of Social Psychology by 
Psychology of Classroom Learning: An Encyclopedia
Psychologists and Their Theories for Students
The Corsini Encyclopedia of Psychology by You can find many useful books, book chapters, and encyclopedia articles in electronic format by doing a search in the PsycBOOKS database. A link to it can be found on the library's Databases by Subject - Psychology & Social Work page.
Try searching in this database for "Piaget" AND "theory" or try looking for "Piaget" as an author.
Here is a direct link to PsycBooks.
To find e-books on your theorist or theory available through the library, use the Ebooks, use the links found on the library database webpage or use the search box below to begin your search.
NoodleTools helps create accurate citations, reference lists, and annotated bibliographies. For best results, use it in conjugation with the APA manual or the APA Style website.