Gaya APA
Ground water hydrology. (1959).
Tokyo:
toppan company.
Gaya Chicago
Ground water hydrology.
.
Tokyo:
toppan company,
1959.
Buku.
Gaya MLA
Ground water hydrology.
.
Tokyo:
toppan company,
1959.
Buku.
Gaya Turabian
Ground water hydrology.
Tokyo:
toppan company,
1959.
Buku.