Παραπομπή APA

(1963). Gas facts: A statistical record of the gas utility industry. New York: American Gas Association.

Παραπομπή Chicago Style

Gas Facts: A Statistical Record of the Gas Utility Industry. New York: American Gas Association, 1963.

Παραπομπή MLA

Gas Facts: A Statistical Record of the Gas Utility Industry. New York: American Gas Association, 1963.

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