Daugherty, H. G., & Kammeyer, K. C. W. (1995). An introduction to population (2nd ed.). Guilford Press.

Daugherty, Helen Ginn, and Kenneth C. W. Kammeyer. An Introduction to Population. 2nd ed. New York: Guilford Press, 1995.

Daugherty, Helen Ginn, and Kenneth C. W. Kammeyer. An Introduction to Population. 2nd ed. Guilford Press, 1995.