Posthuma, B. W. (2002). Small groups in counseling and therapy: Process and leadership (4th ed.). Allyn and Bacon.
Citação do estilo Chicago (17ª ed.)Posthuma, Barbara W. Small Groups in Counseling and Therapy: Process and Leadership. 4th ed. Boston, Mass: Allyn and Bacon, 2002.
Citação MLA (9ª ed.)Posthuma, Barbara W. Small Groups in Counseling and Therapy: Process and Leadership. 4th ed. Allyn and Bacon, 2002.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.