APA (7th ed.) Citation

Sonderegger, R., Dunant, H., & Sonderegger, W. (1935). Jean Henry Dunant--Revolutionär! Reso-Verlag.

Chicago Style (17th ed.) Citation

Sonderegger, René, Henry Dunant, and Wilhelm Sonderegger. Jean Henry Dunant--Revolutionär! Zürich: Reso-Verlag, 1935.

MLA (9th ed.) Citation

Sonderegger, René, et al. Jean Henry Dunant--Revolutionär! Reso-Verlag, 1935.