APA引文

McAtee, W. L. (1918). Food habits of the mallard ducks of the United States. U.S. Department of Agriculture.

芝加哥风格引文

McAtee, W. L. Food Habits of the Mallard Ducks of the United States. Washington: U.S. Department of Agriculture, 1918.

MLA引文

McAtee, W. L. Food Habits of the Mallard Ducks of the United States. U.S. Department of Agriculture, 1918.

警告：这些引文格式不一定是100％准确.