Gaya APA
Cottrell, Leonard. (1957).
The Anvil of civilization / Leonard Cottrell .
:
New York : Mentor Civilization.
Gaya Chicago
Cottrell, Leonard.
The Anvil of civilization / Leonard Cottrell.
:
New York : Mentor Civilization,
1957.
Buku.
Gaya MLA
Cottrell, Leonard.
The Anvil of civilization / Leonard Cottrell.
:
New York : Mentor Civilization,
1957.
Buku.
Gaya Turabian
Cottrell, Leonard.
The Anvil of civilization / Leonard Cottrell.
:
New York : Mentor Civilization,
1957.
Buku.