Cita APA

Judkins, C. J. n. 1., & Judkins, C. J. n. 1. (1942). Trade and professional associations of the United States. Washington: U.S. Government Printing Office.

Citación estilo Chicago

Judkins, Calvert Jay n. 1894, y Calvert Jay n. 1894 Judkins. Trade and Professional Associations of the United States. Washington: U.S. Government Printing Office, 1942.

Cita MLA

Judkins, Calvert Jay n. 1894, y Calvert Jay n. 1894 Judkins. Trade and Professional Associations of the United States. Washington: U.S. Government Printing Office, 1942.