Gaya APA
LIU, D, H, ., LIPTAK, B, G, .
(2000).
GROUNDWATER and surface water pollution
.
London:
Lewis.
Gaya MLA
LIU, David, H.F., ., LIPTAK, Bela, G., .
"GROUNDWATER and surface water pollution".
London:
Lewis,
2000.
Buku.