Michels, S., & Helff, S. (2018). Global photographies: Memory - history - archives. Transcript.
Lua i Stíl Chicago (17ú heag.)Michels, Stefanie, agus Sissy Helff. Global Photographies: Memory - History - Archives. Bielefeld: Transcript, 2018.
Lua MLA (9ú heag.)Michels, Stefanie, agus Sissy Helff. Global Photographies: Memory - History - Archives. Transcript, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.