APA (7th ed.) Citation

HARRY, O. (1959). Ball-bearing screw and nut mechanism.

Chicago Style (17th ed.) Citation

HARRY, ORNER. Ball-bearing Screw and Nut Mechanism. 1959.

MLA (9th ed.) Citation

HARRY, ORNER. Ball-bearing Screw and Nut Mechanism. 1959.

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