Gaya APA
ESTEY, J, A.
(1959).
Business Cycles: Their Nature,Cause,and Control
(
3rd.ed)
.
America:
Prentice-Hall,Inc.
Gaya MLA
ESTEY, James, Arthur.
"Business Cycles: Their Nature,Cause,and Control".
3rd.ed
America:
Prentice-Hall,Inc,
1959.
Text.