Broster, E.J.
Longmans , 1968
Buku Teks
Fatmi Hadiani, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2001
UI - Tesis (Membership)
Kuh, Edwin
North Holland , 1963
Buku Teks
Hammer, Frederick S.
Prentice-Hall, 1965
Buku Teks
Dadat Sunardi, author
1986
UI - Skripsi (Membership)