Laura E Berk. (2014). Exploring lifespan development. Pearson.
Chicago Style aipamenaLaura E Berk. Exploring Lifespan Development. Boston: Pearson, 2014.
MLA aipamenaLaura E Berk. Exploring Lifespan Development. Pearson, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.