Gaya APA
Judson, Sheldon, Kauffman, Marvin. (1987).
Physical geology (7e).
New Jersey:
Prentice Hall.
Gaya Chicago
Judson, Sheldon, Kauffman, Marvin.
Physical geology.
7e
New Jersey:
Prentice Hall,
1987.
Buku.
Gaya MLA
Judson, Sheldon, Kauffman, Marvin.
Physical geology.
7e
New Jersey:
Prentice Hall,
1987.
Buku.
Gaya Turabian
Judson, Sheldon, Kauffman, Marvin.
Physical geology.
7e
New Jersey:
Prentice Hall,
1987.
Buku.