APA (7th ed.) Citation

Felker, C. A. (1943). Helical milling .. The Bruce publishing company.

Chicago Style (17th ed.) Citation

Felker, C. A. Helical Milling .. Milwaukee: The Bruce publishing company, 1943.

MLA (9th ed.) Citation

Felker, C. A. Helical Milling .. The Bruce publishing company, 1943.

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