1. Social encounters: Readings in social interaction;Argyle,1973
2. Information in a local authority social services department. A non-participant observation study;Barnes,1975
3. Formal organizations: A comparative approach;Blau,1963
4. Participant observation: Theory and practice;Friedrichs,1975
5. User satisfaction with a librarian's immediate and non-immediate verbal-nonverbal communication;Gothberg,1974