Gaya APA
Valentine , Lloyd m. (1987).
Business Cycles Forecasting .
Cincinnati:
South-Western Publishing.
Gaya Chicago
Valentine , Lloyd m.
Business Cycles Forecasting.
Cincinnati:
South-Western Publishing,
1987.
Text.
Gaya MLA
Valentine , Lloyd m.
Business Cycles Forecasting.
Cincinnati:
South-Western Publishing,
1987.
Text.
Gaya Turabian
Valentine , Lloyd m.
Business Cycles Forecasting.
Cincinnati:
South-Western Publishing,
1987.
Print.