APA (7th ed.) Citation

Howe, W. H. (1939). Water heating load. American Gas Association Monthly, 21, 211.

Chicago Style (17th ed.) Citation

Howe, W. H. "Water Heating Load." American Gas Association Monthly 21 (1939): 211.

MLA (9th ed.) Citation

Howe, W. H. "Water Heating Load." American Gas Association Monthly, vol. 21, 1939, p. 211.

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