Gaya APA
AMOS, J, O, M.
(1987).
ECONOMICS CONCEPTS, ANALYSIS, AND APPLICATIONS
.
Belmont, California:
WADSWORTH.
Gaya MLA
AMOS, Jr., Orley, M..
"ECONOMICS CONCEPTS, ANALYSIS, AND APPLICATIONS".
Belmont, California:
WADSWORTH,
1987.
Textbook.