Gaya APA

Michaela, K., Dirk, K. (2017). Childlessness in Europe :contexts, causes, and consequences . Cham, Switzerland: Springer Open.

Gaya MLA

Kreyenfeld, Michaela., Konietzka, Dirk. "Childlessness in Europe :contexts, causes, and consequences". Cham, Switzerland: Springer Open, 2017. Electronic Resource.