1. WhatsApp Privacy Policy,2021
2. Defining Privacy: How Users Interpret Technical Terms in Privacy Policies;Tang,2021
3. Interpersonal Mechanisms Linking Close Relationships To Health;Pietromonaco,2003
4. S. Saeb, E. Lattie, K. Kording, D. Mohr, Mobile Phone Detection of Semantic Location and Its Relationship to Depression and Anxiety, JMIR MHealth UHealth.
5. Social Networks: The Value of Variety;Erickson,2017