APA Citation

Otterndorf, A., & Otterndorf, M. (1921). Sammlung Belgard-Schivelbein. Ahlbeck [u.a.].

Chicago Style Citation

Otterndorf, Alma, and Margot Otterndorf. Sammlung Belgard-Schivelbein. Ahlbeck [u.a.], 1921.

MLA Citation

Otterndorf, Alma, and Margot Otterndorf. Sammlung Belgard-Schivelbein. Ahlbeck [u.a.], 1921.

Warning: These citations may not always be 100% accurate.