APA-referens (7:e uppl.)

Pulkkinen, L., & Kokko, K. (2017). Human development from middle childhood to middle adulthood: Growing up to be middle-aged. Routledge.

Chicago-referens (17:e uppl.)

Pulkkinen, Lea, och Katja Kokko. Human Development from Middle Childhood to Middle Adulthood: Growing Up to Be Middle-aged. Oxfordshire, [England] ; New York, New York: Routledge, 2017.

MLA-referens (9:e uppl.)

Pulkkinen, Lea, och Katja Kokko. Human Development from Middle Childhood to Middle Adulthood: Growing Up to Be Middle-aged. Routledge, 2017.