Trecker, Harleigh B., author
Social group work principles and practices
Association Press, 1967
 Buku Teks
Konopka, Gisela, author
Social group work : a helping process
Prentice-Hall, 1963
 Buku Teks
Batten,T.R., author
The non-directive approach in group and community work
Oxford University Press, 1978
 Buku Teks
Miles, Matthew B., author
Learning to work in groups
Teachers College Press, 1973
 Buku Teks
Thibaut, John W., author
The social psychology of groups
John Wiley and Sons, 1967
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