Company organization for economic forecasting : keeping informed on the business outlook
edited by Elizabeth Marting
American Management Association , 1957
 Buku Teks
Hanke, John E.
Business forecasting
Pearson - Prentice Hall, 2009
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Grangen, C.W.J. (Clive William John), 1934-
Forecasting in business and economics
Academic Press, 1989
 Buku Teks
Hanke, John E.
Business forecasting
Prentice Halls, 2001
 Buku Teks
Hanke, Jonh E.
Business forecasting
Pearson Prentice Hall, 2005
 Buku Teks