Cook, R. C., & Lecht, J. (1968). People!: An introduction to the study of population. Columbia Books.
芝加哥风格引文Cook, Robert C., 与 Jane Lecht. People!: An Introduction to the Study of Population. Washington: Columbia Books, 1968.
MLA引文Cook, Robert C., 与 Jane Lecht. People!: An Introduction to the Study of Population. Columbia Books, 1968.
警告：这些引文格式不一定是100％准确.