Gilbert, Sara D.
The career training sourcebook / Sara D. Gilbert
McGrw-Hill, Inc. , 1993
 Buku Teks SO
Anderton, Charles H
Principles of Conflict Economics: The Political Economy of War, Terrorism, Genocide, and Peace
Cambridge University Press, 2019
 eBooks
Martin, Anne
Economics and agriculture
Routledger Kegan Paul, 1958
 Buku Teks
Mann, Thorbjoern
Building economics for architects
Van Nostrand Reinhold, 1992
 Buku Teks SO
Black, John Donald
Introduction to economics for agriculture
Macmillan, 1953
 Buku Teks