Weeks, J. R. (1978). Population: An introduction to concepts and issues. Wadsworth Pub. Co..
芝加哥风格引文Weeks, John R. Population: An Introduction to Concepts and Issues. Belmont, Calif.: Wadsworth Pub. Co., 1978.
MLA引文Weeks, John R. Population: An Introduction to Concepts and Issues. Wadsworth Pub. Co., 1978.
警告：这些引文格式不一定是100％准确.