Cita APA (7th ed.)

Smith, R. V. (1983). Practical natural gas engineering. PennWell Books.

Cita Chicago (17th ed.)

Smith, R. V. Practical Natural Gas Engineering. Tulsa, Okla.: PennWell Books, 1983.

Cita MLA (8th ed.)

Smith, R. V. Practical Natural Gas Engineering. PennWell Books, 1983.