Collier, Abram T.
Harper & Row, 1962
Buku Teks
Eden, Colin
Macmillan, 1975
Buku Teks
Cooke, Steve
Prentice-Hall, 1991
Buku Teks
Eko Jatmiko Utomo
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Disertasi Membership
Churchman, Charles West, 1913-
Prentice-Hall, 1961
Buku Teks