Gaya APA
Seddon, E., Appleton, J.
(1981).
Applied Economics 3rd Ed
(
3rd Ed)
.
United Stated of America:
Macdonald & Evans.
Gaya MLA
Seddon, E., Appleton, JDS.
"Applied Economics 3rd Ed".
3rd Ed
United Stated of America:
Macdonald & Evans,
1981.
Text.