Keicher, P. Wittgensteins Fotoalbum: Peter Keicher. Album : Organisationsform narrativer Kohärenz.(2013).
Chicago Style (17. basım) AtıfKeicher, Peter. "Wittgensteins Fotoalbum: Peter Keicher." Album : Organisationsform Narrativer Kohärenz.(2013) .
MLA (8th ed.) AtıfKeicher, Peter. "Wittgensteins Fotoalbum: Peter Keicher." Album : Organisationsform Narrativer Kohärenz.(2013), .
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..