Gaya APA
Worcester, Philip G.. (1948).
A text book of geomorphology .
New Jersey:
D. Van Nostrand Company.
Gaya Chicago
Worcester, Philip G..
A text book of geomorphology.
New Jersey:
D. Van Nostrand Company,
1948.
.
Gaya MLA
Worcester, Philip G..
A text book of geomorphology.
New Jersey:
D. Van Nostrand Company,
1948.
.
Gaya Turabian
Worcester, Philip G..
A text book of geomorphology.
New Jersey:
D. Van Nostrand Company,
1948.
.