Gaya APA
Forecasting: Method and Aplications. (1983).
:
.
Gaya Chicago
Forecasting: Method and Aplications.
Kedua.
:
,
1983.
.
Gaya MLA
Forecasting: Method and Aplications.
Kedua.
:
,
1983.
.
Gaya Turabian
Forecasting: Method and Aplications.
:
,
1983.
.