Weeks, J. R. (2021). Population: An introduction to concepts and issues (Thirteenth edition.). Cengage Learning, Inc.
Cita Chicago Style (17a ed.)Weeks, John Robert. Population: An Introduction to Concepts and Issues. Thirteenth edition. Boston, MA, USA: Cengage Learning, Inc, 2021.
Cita MLA (9a ed.)Weeks, John Robert. Population: An Introduction to Concepts and Issues. Thirteenth edition. Cengage Learning, Inc, 2021.
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