Cita APA (7th ed.)

Wachter, K. W. (2014). Essential demographic methods. Harvard University Press.

Cita Chicago (17th ed.)

Wachter, Kenneth W. Essential Demographic Methods. Cambridge, Massachusetts: Harvard University Press, 2014.

Cita MLA (9th ed.)

Wachter, Kenneth W. Essential Demographic Methods. Harvard University Press, 2014.