Gripp, A. (2013). Markus Henttonen: Silent Night. Photonews.
Lua i Stíl Chicago (17ú heag.)Gripp, Anna. "Markus Henttonen: Silent Night." Photonews 2013.
Lua MLA (8ú heag.)Gripp, Anna. "Markus Henttonen: Silent Night." Photonews, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.