APA (7th ed.) Citation

Schröder, H., Albrecht, R., & Guttenberg, G. (1981). 1870 - 1918. Beck.

Chicago Style (17th ed.) Citation

Schröder, Hannelore, Regine Albrecht, and Gerda Guttenberg. 1870 - 1918. München: Beck, 1981.

MLA (8th ed.) Citation

Schröder, Hannelore, et al. 1870 - 1918. Beck, 1981.