Gaya APA
Leet,L.Don. (1978).
Physical Geoloy .
New Jersey:
Prentice-Hall.
Gaya Chicago
Leet,L.Don.
Physical Geoloy.
New Jersey:
Prentice-Hall,
1978.
.
Gaya MLA
Leet,L.Don.
Physical Geoloy.
New Jersey:
Prentice-Hall,
1978.
.
Gaya Turabian
Leet,L.Don.
Physical Geoloy.
New Jersey:
Prentice-Hall,
1978.
.