"Mater celeberr. Mozart":

MLA

Morgenstern, Anja, and Eva Neumayr. "mater Celeberr. Mozart". Vienna: Hollitzer, 2023.

APA

Morgenstern, A., & Neumayr, E. (2023). "Mater celeberr. Mozart". Vienna: Hollitzer.

Chicago

Morgenstern, Anja ed., and Eva Neumayr ed. "mater Celeberr. Mozart". Vienna: Hollitzer, 2023.