APA (7th ed.) Citation

Southern Natural Gas Company. (1977). Southern natural gas company and subsidiaries: General system map. Southern Natural Gas Company.

Chicago Style (17th ed.) Citation

Southern Natural Gas Company. Southern Natural Gas Company and Subsidiaries: General System Map. [Houston, Texas]: Southern Natural Gas Company, 1977.

MLA (9th ed.) Citation

Southern Natural Gas Company. Southern Natural Gas Company and Subsidiaries: General System Map. Southern Natural Gas Company, 1977.