Galvin, Kathleen M.
Scott, Foresman, 1982
Buku Teks SO
edited by Sylvia Ann Hewlett, Alice S. Ilchman and John J. Sweeney
Ballinger, 1986
Buku Teks SO
Rina
Fakultas Psikologi Universitas Indonesia, 2007
UI - Tesis Membership
Dyere, Everett D.
McGraw-Hill, 1979
Buku Teks SO
Kidman, Antony
Biochemical & General Services, 1995
Buku Teks SO