Gaya APA
Human impact on the ecosystem : conceptual frame works in geography. (1981).
New York:
Longman Group, ltd.
Gaya Chicago
Human impact on the ecosystem : conceptual frame works in geography.
Ed.1.
New York:
Longman Group, ltd,
1981.
.
Gaya MLA
Human impact on the ecosystem : conceptual frame works in geography.
Ed.1.
New York:
Longman Group, ltd,
1981.
.
Gaya Turabian
Human impact on the ecosystem : conceptual frame works in geography.
New York:
Longman Group, ltd,
1981.
.