Larry Zilliox: The Opposition Research Handbook (Kindle Ed.)
Alan Huffman: We're with Nobody: Two Insiders Reveal the Dark Side of American Politics
Web of Deceit: Misinformation and Manipulation in the Age of Social Media
Marcy Phelps: Research on Main Street: Using the Web to Find Local Business and Market Information
Kimberly Goetz: An Introduction to Internet-Based Financial Investigations
Charles N. Davis: The Art of Access: Strategies for Acquiring Public Records
Edward J. Appel: Internet Searches for Vetting, Investigations, and Open-Source Intelligence