Gaya APA
Dott, R, H., Batten, R, L.
(1988).
Evolution of The Earth
(
4th Edition)
.
United States:
McGraw-Hill.
Gaya MLA
Dott, Robert, H., Batten, Roger, Lyman.
"Evolution of The Earth".
4th Edition
United States:
McGraw-Hill,
1988.
Text.