Gaya APA
PENNY, D., SINGARIMBUN, M.
(1972).
A Case study of rural poverty
.
Canberra:
Australian National Universty.
Gaya MLA
PENNY, D.H., SINGARIMBUN, Masri.
"A Case study of rural poverty".
Canberra:
Australian National Universty,
1972.
Artikel.