APA (7th ed.) Citation

Universitäts-Bibliothek Berlin. (1923). [Gästebuch].

Chicago Style (17th ed.) Citation

Universitäts-Bibliothek Berlin. [Gästebuch]. Berlin, 1923.

MLA (9th ed.) Citation

Universitäts-Bibliothek Berlin. [Gästebuch]. 1923.

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