The ADI is a global biographical research board comprised of influential and accomplished individuals. Men and women devote their time and expertise to serve as advisors to the American Biographical Institute (ABI), a 41-year-old biographical reference publisher. The ABI chose Prof. Duca for this post by honorary selection.

American Biographical Institute reference source books provide authoritative guides for business consultants, researchers, reporters, scholars, biographers, librarians, corporations, interviewers, students, historians, sociologists and many others.