Gaya APA
PORTERFIELD, G, A., HALL, K, B.
(1994).
A concise guide to community planning
.
New York:
McGraw-Hill.
Gaya MLA
PORTERFIELD, Gerald, A.., HALL, Kenneth, B..
"A concise guide to community planning".
New York:
McGraw-Hill,
1994.
Buku.