Cita APA (7a ed.)

van Hoorn, W., & Keilmann, N. (1997). Birth expectations and their use in fertility forecasting.

Cita Chicago Style (17a ed.)

van Hoorn, Wim, y Nico Keilmann. Birth Expectations and Their Use in Fertility Forecasting. Luxembourg, 1997.

Cita MLA (8a ed.)

van Hoorn, Wim, y Nico Keilmann. Birth Expectations and Their Use in Fertility Forecasting. 1997.