Gaya APA
JONES, C, O.
(1972).
An introduction to the study of public policy
(
cet. 1)
.
Belmont:
Duxbury Press.
Gaya MLA
JONES, Charles, O..
"An introduction to the study of public policy".
cet. 1
Belmont:
Duxbury Press,
1972.
Buku.