Gaya APA
Geology Today. (1973).
Del Mar,California:
CRM Books.
Gaya Chicago
Geology Today.
.
Del Mar,California:
CRM Books,
1973.
Monograf.
Gaya MLA
Geology Today.
.
Del Mar,California:
CRM Books,
1973.
Monograf.
Gaya Turabian
Geology Today.
Del Mar,California:
CRM Books,
1973.
Monograf.