Bolton, Robert
Social style/management style : developing productive work relationships
American Management Associations, 1984
 Buku Teks
Social Relationships
edited by Joseph P. Forgas and Julie Fitness
Psychology Press, 2008
 Buku Teks
Murphy, Lawrence R.
Healthy and productive work: an international perspective
Taylor and Francis, 2000
 Buku Teks
Primate social relationships: an integrated approach
edited by Robert A. Hinde
Blackwell, 1983
 Buku Teks
Dubois, Brenda, 1949-
Social work
Allyn and Boston, 1992
 Buku Teks