Artikel Jurnal
AS Rakhmad, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2006
UI - Tesis (Membership)
Deo, Narsingh, 1936-, author
Prantice-Hall, 1990
Buku Teks
Kaplan, Edward L., author
John Wiley & Sons, 1982
Buku Teks
Pesaran, M.H., author
Ellis Horwood , 1980
Buku Teks