APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (8वां संस्करण) प्रशस्ति पत्र

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