Cita APA

Ziehl, S. C., & Susan C. Ziehl. (2002). Population studies. Oxford,New York: Oxford University Press.

Chicago Style Citation

Ziehl, Susan C., i Susan C. Ziehl. Population Studies. Oxford,New York: Oxford University Press, 2002.

Cita MLA

Ziehl, Susan C., i Susan C. Ziehl. Population Studies. Oxford,New York: Oxford University Press, 2002.