Thakore, Shuchen B.
Introduction to process engineering and design
Tata McGraw-Hill, 2007
 Buku Teks SO
Policy-making in Britain : an introduction
edited by Maurice Mullard
Routledge, 1995
 Buku Teks SO
Jones, Charles O.
An introduction to the study of public policy
Brooksm, 1977
 Buku Teks
Bach, George Leland
Economics an introduction to analysis and policy
Prentice-Hall, 1958
 Buku Teks SO
Bach, George Leland
Economics an introduction to analysis and policy
Prentice Hall of India, 1977
 Buku Teks SO