Gaya APA
Modern Physical Geography Third Edition. (1978).
New York:
Jonh Willey & Sons.
Gaya Chicago
Modern Physical Geography Third Edition.
Third Edition.
New York:
Jonh Willey & Sons,
1978.
Buku.
Gaya MLA
Modern Physical Geography Third Edition.
Third Edition.
New York:
Jonh Willey & Sons,
1978.
Buku.
Gaya Turabian
Modern Physical Geography Third Edition.
New York:
Jonh Willey & Sons,
1978.
Buku.