Buhrs, M., & Fengel, M. (2013). On photography: Martin Fengel. Kerber.
Lua i Stíl Chicago (17ú heag.)Buhrs, Michael, agus Martin Fengel. On Photography: Martin Fengel. Bielefeld [u.a.]: Kerber, 2013.
Lua MLA (8ú heag.)Buhrs, Michael, agus Martin Fengel. On Photography: Martin Fengel. Kerber, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.