APA (7th ed.) Citation

(2020). external_content.pdf. W. Bertelsmann Verlag.

Chicago Style (17th ed.) Citation

External_content.pdf. W. Bertelsmann Verlag, 2020.

MLA (8th ed.) Citation

External_content.pdf. W. Bertelsmann Verlag, 2020.

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