Gaya APA
VALENTINE, ., DAUTEN, . (2009).
BUSINESS CYLES & FORECASTING, SIXTH EDITION .
CINCINNATI:
SOUTH-WESTERN COLLEGE PUBLISHING.
Gaya MLA
VALENTINE, ., DAUTEN, .
"BUSINESS CYLES & FORECASTING, SIXTH EDITION".
CINCINNATI:
SOUTH-WESTERN COLLEGE PUBLISHING,
2009.
Prodi S1 Manajemen.