Gaya APA
Clark, John G.. (1990).
The Political economy of world energy : a twentieth-century perspective .
New York:
Harvester Wheatsheaf.
Gaya Chicago
Clark, John G..
The Political economy of world energy : a twentieth-century perspective.
New York:
Harvester Wheatsheaf,
1990.
Text.
Gaya MLA
Clark, John G..
The Political economy of world energy : a twentieth-century perspective.
New York:
Harvester Wheatsheaf,
1990.
Text.
Gaya Turabian
Clark, John G..
The Political economy of world energy : a twentieth-century perspective.
New York:
Harvester Wheatsheaf,
1990.
Print.