The Association for Supervision and Curriculum Development, 1978
Buku Teks
Watson, Richard A., author
Harcourt, Brace and World, 1969
Buku Teks
Butzer, Karl W., author
Cambridge University Press, 1982
Buku Teks
Lewoleba, Gregorius Goran, author
Program Pascasarjana Universitas Indonesia, 1991
UI - Tesis (Membership)
Getis, Arthur, author
Macmillan, 1985
Buku Teks