APA (7th ed.) Citation

Weigand, H., & McCallum, W. G. (2019). The Legacy of Felix Klein (1st edition 2019.). Springer Open.

Chicago Style (17th ed.) Citation

Weigand, Hans-Georg, and William G. McCallum. The Legacy of Felix Klein. 1st edition 2019. Cham: Springer Open, 2019.

MLA (9th ed.) Citation

Weigand, Hans-Georg, and William G. McCallum. The Legacy of Felix Klein. 1st edition 2019. Springer Open, 2019.