APA (7th ed.) Citation

Ypsilon: Oncken-Jugendtaschenbuch. Oncken.

Chicago Style (17th ed.) Citation

Ypsilon: Oncken-Jugendtaschenbuch. Wuppertal: Oncken.

MLA (9th ed.) Citation

Ypsilon: Oncken-Jugendtaschenbuch. Oncken.

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