APA (7th ed.) Citation

Metzker, R. K., & Angst, R. 1. (2018). Ray K. Metzker unknown, unknown Ray K. Metzler. Roland Angst, only photography.

Chicago Style (17th ed.) Citation

Metzker, Ray K., and Roland 19XX- Angst. Ray K. Metzker Unknown, Unknown Ray K. Metzler. [Berlin]: Roland Angst, only photography, 2018.

MLA (9th ed.) Citation

Metzker, Ray K., and Roland 19XX- Angst. Ray K. Metzker Unknown, Unknown Ray K. Metzler. Roland Angst, only photography, 2018.