APA (7th ed.) Citation

Judkins, C. J. (1942). Trade and professional associations of the United States. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Judkins, Calvert Jay. Trade and Professional Associations of the United States. Washington: U.S. Govt. Print. Off, 1942.

MLA (9th ed.) Citation

Judkins, Calvert Jay. Trade and Professional Associations of the United States. U.S. Govt. Print. Off, 1942.