http://www.apa.org/science/programs/testing/index.aspx
The A.P.A.'s "Testing and Assessment" page has a link to a FAQ about psychological tests and how to find information about psychological instruments.
http://www.testpublishers.org/
A list of test publishers, their products and services.
http://www.unl.edu/buros
Includes test review locator, subject index, and instructions on using Mental Measurements Yearbook (MMY).
Code of Fair Testing Practices in Education
https://www.apa.org/science/programs/testing/fair-testing.pdf
This is a 13-page .PDF document, developed by the Joint Committee on Testing Practices.
https://www.intestcom.org/
The International Test Commission works in a variety of psychological, educational, occupational, and related measurement areas to promote fair, valid, transparent, and efficient testing, assessment, and reporting practices, guidelines, and policies to benefit individuals, institutions, and societies throughout the world.