Gaya APA
Valentine, Lloyd M.. (1983).
Business cycles & forecasting .
Cincinnati:
South-Western.
Gaya Chicago
Valentine, Lloyd M..
Business cycles & forecasting.
Cincinnati:
South-Western,
1983.
.
Gaya MLA
Valentine, Lloyd M..
Business cycles & forecasting.
Cincinnati:
South-Western,
1983.
.
Gaya Turabian
Valentine, Lloyd M..
Business cycles & forecasting.
Cincinnati:
South-Western,
1983.
.