APA (7th ed.) Citation

Petrenko, S. N., & Whittemore, H. L. (1921). Friction and carrying capacity of ball and roller bearings. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Petrenko, Serge Nicolas, and Herbert L. Whittemore. Friction and Carrying Capacity of Ball and Roller Bearings. [Washington?]: U.S. Government Printing Office, 1921.

MLA (9th ed.) Citation

Petrenko, Serge Nicolas, and Herbert L. Whittemore. Friction and Carrying Capacity of Ball and Roller Bearings. U.S. Government Printing Office, 1921.