Gaya APA
Firth, Frank E.. (1969).
The encyclopedia of marine resources .
New York:
Van Nostrand Reinhold.
Gaya Chicago
Firth, Frank E..
The encyclopedia of marine resources.
New York:
Van Nostrand Reinhold,
1969.
Text.
Gaya MLA
Firth, Frank E..
The encyclopedia of marine resources.
New York:
Van Nostrand Reinhold,
1969.
Text.
Gaya Turabian
Firth, Frank E..
The encyclopedia of marine resources.
New York:
Van Nostrand Reinhold,
1969.
Print.