APA (7th ed.) Citation

Burkhardt, C. H. (1951). Oil and gas trends in warm air heating. Sheet Metal Worker., 42, 45.

Chicago Style (17th ed.) Citation

Burkhardt, C. H. "Oil and Gas Trends in Warm Air Heating." Sheet Metal Worker. 42 (1951): 45.

MLA (9th ed.) Citation

Burkhardt, C. H. "Oil and Gas Trends in Warm Air Heating." Sheet Metal Worker., vol. 42, 1951, p. 45.

Warning: These citations may not always be 100% accurate.