Gaya APA
THUROW, R, L, H, L, C.
(1981).
THE ECONOMIC PROBLEM
(
6)
.
Amerika:
Prentice - Hall International.
Gaya MLA
THUROW, ROBERT, L., HEILBRONER,, LISTER, C..
"THE ECONOMIC PROBLEM".
6
Amerika:
Prentice - Hall International,
1981.
Text.