Harry - yer a wizard

MLA

Gymnich, Marion, Hanne Birk, and Denise Burkhard. Harry - Yer a Wizard. Tectum Verlag, .

APA

Gymnich, M., Birk, H., & Burkhard, D. Harry - yer a wizard. Tectum Verlag.

Chicago

Gymnich, Marion, Hanne Birk, and Denise Burkhard. Harry - Yer a Wizard. : Tectum Verlag.