Völkel, S., & Ohler, P. Understanding pictures in early childhood: Sabine Völkel. Peter Ohler. Origins of pictures : anthropological discourses in image science.(2013).
Lua i Stíl Chicago (17ú heag.)Völkel, Sabine, agus Peter Ohler. "Understanding Pictures in Early Childhood: Sabine Völkel. Peter Ohler." Origins of Pictures : Anthropological Discourses in Image Science.(2013) .
Lua MLA (8ú heag.)Völkel, Sabine, agus Peter Ohler. "Understanding Pictures in Early Childhood: Sabine Völkel. Peter Ohler." Origins of Pictures : Anthropological Discourses in Image Science.(2013), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.