Gaya APA
Sill, D, L.
(1988).
International Encyclopedia of the Social Sciences vol. 1 - 17
.
:
THE MACMILLAN COMPANY.
Gaya MLA
Sill, David, L..
"International Encyclopedia of the Social Sciences vol. 1 - 17".
:
THE MACMILLAN COMPANY,
1988.
Text.