Gaya APA

Pulkkinen, L. (2017). Human Development from Middle Childhood to Middle Adulthood : Growing Up to be Middle-Aged . New York: Routledge.

Gaya MLA

Pulkkinen, Lea. "Human Development from Middle Childhood to Middle Adulthood : Growing Up to be Middle-Aged". New York: Routledge, 2017. Computer File.