APA (7th ed.) Citation

Smith, H. M. (1930). Possible utilization of natural gas for production of chemical products. [publisher not identified].

Chicago Style (17th ed.) Citation

Smith, Harold M. Possible Utilization of Natural Gas for Production of Chemical Products. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Smith, Harold M. Possible Utilization of Natural Gas for Production of Chemical Products. [publisher not identified], 1930.