Ba, G. (1991). Group therapy with elderly patients. [s.n.].
Cita Chicago Style (17a ed.)Ba, Gabriella. Group Therapy with Elderly Patients. [S.l.]: [s.n.], 1991.
Cita MLA (9a ed.)Ba, Gabriella. Group Therapy with Elderly Patients. [s.n.], 1991.
Precaución: Estas citas no son 100% exactas.