Preston-Shoot, M. (1995). Effective groupwork. MacMillan.
Cita Chicago Style (17a ed.)Preston-Shoot, Michael. Effective Groupwork. Basingstoke [etc.]: MacMillan, 1995.
Cita MLA (9a ed.)Preston-Shoot, Michael. Effective Groupwork. MacMillan, 1995.
Precaución: Estas citas no son 100% exactas.
