Cita APA (7th ed.)

WEEKS, J. R. (1986). Population: An introduction to concepts and issues.--Ed.3. Wadsworth Pub Co.

Cita Chicago (17th ed.)

WEEKS, John R. Population: An Introduction to Concepts and Issues.--Ed.3. Belmont: Wadsworth Pub Co, 1986.

Cita MLA (9th ed.)

WEEKS, John R. Population: An Introduction to Concepts and Issues.--Ed.3. Wadsworth Pub Co, 1986.