APA (7th ed.) Citation

Leeuwen, E. v., & Zagefka, H. (2017). Intergroup helping. Springer. https://doi.org/10.1007/978-3-319-53026-0

Chicago Style (17th ed.) Citation

Leeuwen, Esther van, and Hanna Zagefka. Intergroup Helping. Cham: Springer, 2017. https://doi.org/10.1007/978-3-319-53026-0.

MLA (9th ed.) Citation

Leeuwen, Esther van, and Hanna Zagefka. Intergroup Helping. Springer, 2017. https://doi.org/10.1007/978-3-319-53026-0.