APA (7th ed.) Citation

Ruhling, T. C. (1927). Underground systems for electric light and power. McGraw-Hill book company, inc..

Chicago Style (17th ed.) Citation

Ruhling, T. C. Underground Systems for Electric Light and Power. New York [etc.]: McGraw-Hill book company, inc., 1927.

MLA (9th ed.) Citation

Ruhling, T. C. Underground Systems for Electric Light and Power. McGraw-Hill book company, inc., 1927.