Capezio, Peter J., 1947-
Manager's guide to business planning
McGraw-Hill, 2010
 Buku Teks
Hussey, David E.
Corporate planning: theory and practice
Pergamon Press, 1976
 Buku Teks
Dauten, Carl Anton, 1913-
Business cycles and forecasting
South-Western Publishing, 1978
 Buku Teks
Valentine, Lloyd M.
Business cycles and forecasting
South-Western Publishing, 1991
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Habbel, Rolf W.
The Human Factor: management culture in a changing world
Palgrave Macmillan, 2002
 Buku Teks