Harrod, R.F.
Towards a dynamic economics : some recent developments of economic theory and their application to policy
Macmillan, 1956
 Buku Teks
Booth, Grayce M.
The distributed system environment: some practical approaches
McGraw-Hill, 1981
 Buku Teks
The structure of American industry Some case studies/Editor Walter Adams
1951
 Buku Teks
Okamura, Hiroyuki
Moment-based approach for some age-based replacement problems
Taylor and Francis, 2017
 Artikel Jurnal
Gillies, Dee Ann
Nursing management: a system approach
W.B: Saunders , 1994
 Buku Teks