APA (7th ed.) Citation

(1927). Notes with reference to head dimensions of slotted head cap screws and machine screws. [publisher not identified].

Chicago Style (17th ed.) Citation

Notes with Reference to Head Dimensions of Slotted Head Cap Screws and Machine Screws. Washington, D.C.: [publisher not identified], 1927.

MLA (9th ed.) Citation

Notes with Reference to Head Dimensions of Slotted Head Cap Screws and Machine Screws. [publisher not identified], 1927.