APA (7th ed.) Citation

Große Holtforth, I. (2010). Happy Birthday! Knesebeck.

Chicago Style (17th ed.) Citation

Große Holtforth, Isabel. Happy Birthday! München: Knesebeck, 2010.

MLA (9th ed.) Citation

Große Holtforth, Isabel. Happy Birthday! Knesebeck, 2010.

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