Cita APA (7th ed.)
Bertcher Harvey J. (1977). Creating groups (ed.). Sage publications.
Cita Chicago (17th ed.)
Bertcher Harvey J. Creating Groups. ed. London: Sage publications, 1977.
Cita MLA (9th ed.)
Bertcher Harvey J. Creating Groups. ed. Sage publications, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.