MLA

Hofer, Helmut, Krzysztof Wysocki, and Eduard Zehnder. Polyfold and Fredholm Theory. Springer International Publishing, 2021.

APA

Hofer, H., Wysocki, K., & Zehnder, E. (2021). Polyfold and Fredholm Theory. Springer International Publishing.

Chicago

Hofer, Helmut, Krzysztof Wysocki, and Eduard Zehnder. Polyfold and Fredholm Theory. : Springer International Publishing, 2021.