एपीए उद्धरण

Balestra, P. (1967). The demand for natural gas in the United States: A dynamic approach for the residential and commercial market. North Holland Publishing company.

शिकागो स्टाइल उद्धरण

Balestra, Pietro. The Demand for Natural Gas in the United States: A Dynamic Approach for the Residential and Commercial Market. Amsterdam: North Holland Publishing company, 1967.

एमएलए उद्धरण

Balestra, Pietro. The Demand for Natural Gas in the United States: A Dynamic Approach for the Residential and Commercial Market. North Holland Publishing company, 1967.