Gaya APA

Úrsula., O, S. (2019). Úrsula Oswald Spring: Pioneer on Gender, Peace, Development, Environment, Food and Water (1st ed.). Cham: Springer.

Gaya MLA

Úrsula., Oswald, Spring,. "Úrsula Oswald Spring: Pioneer on Gender, Peace, Development, Environment, Food and Water". 1st ed. Cham: Springer, 2019. E Book.