Dyfyniad APA
Barbi, E., Vaupel, J. W., & Bongaarts, J. (2008). How Long Do We Live?: Demographic Models and Reflections on Tempo Effects. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-78520-0
Dyfyniad Arddull Chicago
Barbi, Elisabetta, James W. Vaupel, and John Bongaarts. How Long Do We Live?: Demographic Models and Reflections on Tempo Effects. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. https://doi.org/10.1007/978-3-540-78520-0.
Dyfyniad MLA
Barbi, Elisabetta, et al. How Long Do We Live?: Demographic Models and Reflections on Tempo Effects. Springer Berlin Heidelberg, 2008. https://doi.org/10.1007/978-3-540-78520-0.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.