APA引文

Judkins, C. J. (1949). National association of the United States. U.S. Dept. of Commerce.

芝加哥风格引文

Judkins, Calvert Jay. National Association of the United States. Washington: U.S. Dept. of Commerce, 1949.

MLA引文

Judkins, Calvert Jay. National Association of the United States. U.S. Dept. of Commerce, 1949.

警告：这些引文格式不一定是100％准确.