Weeks, J. R. (2012). Population: An introduction to concepts and issues (Eleventh edition.). Wadsworth Cengage learning.
Цитирование в стиле Чикаго (17-е изд.)Weeks, John Robert. Population: An Introduction to Concepts and Issues. Eleventh edition. Belmont, CA: Wadsworth Cengage learning, 2012.
Цитирование MLA (8-е изд.)Weeks, John Robert. Population: An Introduction to Concepts and Issues. Eleventh edition. Wadsworth Cengage learning, 2012.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.