Although it is somewhat dated, The Civil Rights Act of 1964, published by Greenhaven Press as part of its "Opposing Viewpoints" series, provides a balanced analysis of the law and its impact by writers from various points of view. Books published by Greenhaven tend to be reliable.
Another book you might consult is The laws that shaped America : fifteen acts of Congress and their lasting impact by Dennis Johnson, published by Routledge, a company that specializes in reference books, in 2009.
The Lincoln Review, which was published by The Lincoln Institute, a conservative black think tank should have some articles that deal with the law. Unfortunately, the site is not searchable, but you can browse the contents of the journals, as well as the letters and the commentaries.
Good luck on your project.
Thanks for your input!