APA (7th ed.) Citation

Northrup, H. R. (1946). Unionization of professional engineers and chemists. Industrial relations counselors, incorporated.

Chicago Style (17th ed.) Citation

Northrup, Herbert Roof. Unionization of Professional Engineers and Chemists. New York: Industrial relations counselors, incorporated, 1946.

MLA (9th ed.) Citation

Northrup, Herbert Roof. Unionization of Professional Engineers and Chemists. Industrial relations counselors, incorporated, 1946.