Gaya APA
Simonds, John O.. (1978).
Earthscape .
New York:
MCGRAW-HILL.
Gaya Chicago
Simonds, John O..
Earthscape.
New York:
MCGRAW-HILL,
1978.
.
Gaya MLA
Simonds, John O..
Earthscape.
New York:
MCGRAW-HILL,
1978.
.
Gaya Turabian
Simonds, John O..
Earthscape.
New York:
MCGRAW-HILL,
1978.
.