This document provides reference materials for a presentation on supporting those coping with an ambiguous loss from a missing loved one. It includes over 50 references from academic papers, books, websites, and organizations in Canada, the United States, the United Kingdom, Australia, New Zealand, and Ireland that address topics like ambiguous loss theory, myths of closure, best practices for counseling families of the missing, and legislative advocacy efforts regarding missing persons policies. The references cover academic research, guidance for families and support services, missing persons data and statistics, as well as legal petitions related to missing persons laws and frameworks.