Gaya APA
DAVIS, S, N., DeWiest, R, J.
(1966).
Hydrogeology
.
Singapore:
Jhon Wiley & Son Inc..
Gaya MLA
DAVIS, Stanley, N.., DeWiest, Roger, JM..
"Hydrogeology".
Singapore:
Jhon Wiley & Son Inc.,
1966.
Text.