Dyfyniad APA

Weeks, J. R. (2012). Population: An introduction to concepts and issues (Eleventh edition.). Wadsworth Cengage learning.

Dyfyniad Arddull Chicago

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Eleventh edition. Belmont, CA: Wadsworth Cengage learning, 2012.

Dyfyniad MLA

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Eleventh edition. Wadsworth Cengage learning, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.