APA (7th ed.) Citation

Dickinson, J. A., & Oakes, C. E. (1921). Results of survey of elevator interlocks and analysis of elevator accident statistics. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Dickinson, J. A., and C. E. Oakes. Results of Survey of Elevator Interlocks and Analysis of Elevator Accident Statistics. [Washington?]: U.S. Government Printing Office, 1921.

MLA (9th ed.) Citation

Dickinson, J. A., and C. E. Oakes. Results of Survey of Elevator Interlocks and Analysis of Elevator Accident Statistics. U.S. Government Printing Office, 1921.