APA (7th ed.) Citation

Barkley, J. F. (1929). Some operating results on small heating plant stokers. [publisher not identified].

Chicago Style (17th ed.) Citation

Barkley, J. F. Some Operating Results on Small Heating Plant Stokers. Washington, D.C.: [publisher not identified], 1929.

MLA (9th ed.) Citation

Barkley, J. F. Some Operating Results on Small Heating Plant Stokers. [publisher not identified], 1929.