APA Style

Behrndt, J. et al (2020). Boundary Value Problems, Weyl Functions, and Differential Operators . Heidelberg, Jerman: Springer International Publishing.

MLA Style

Behrndt, Jussi. et al. "Boundary Value Problems, Weyl Functions, and Differential Operators". Heidelberg, Jerman: Springer International Publishing, 2020. Text.