Jossey-Bass, 1968
Buku Teks
by Robert L. Hamblin ... [et al.]
Robert E. Krieger, 1978
Buku Teks
Fakultas Psikologi Universitas Indonesia, 2004
UI - Tesis (Membership)
Haryono, author
Fakultas Psikologi Universitas Indonesia, 1992
UI - Tesis Membership
Ety Rupitawati
Departmen of Social. Body of Research and the Development of Social Welfare, 1994
Buku Teks