APA Style
Whales and the whaling industry. (April 1975).
:
.
Chicago Style
Whales and the whaling industry.
.
:
,
April 1975.
.
MLA Style
Whales and the whaling industry.
.
:
,
April 1975.
.
Turabian Style
Whales and the whaling industry.
:
,
April 1975.
.