Penninger, J. M., Bast, G., Ziegelböck, M., Devuyst, E., Méhu-Blantar, I., & Heider, C. (2019). Looking glass: Photographic essays on the mechanisms of life / Josef Penninger, Gerald Bast, Maria Ziegelböck, Caroline Heider, Ines Méhu-Blantar, Evelyn Devuyst (editors). De Gruyter.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Penninger, Josef Martin, Gerald Bast, Maria Ziegelböck, Evelyn Devuyst, Ines Méhu-Blantar, و Caroline Heider. Looking Glass: Photographic Essays on the Mechanisms of Life / Josef Penninger, Gerald Bast, Maria Ziegelböck, Caroline Heider, Ines Méhu-Blantar, Evelyn Devuyst (editors). Berlin ; Boston: De Gruyter, 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Penninger, Josef Martin, et al. Looking Glass: Photographic Essays on the Mechanisms of Life / Josef Penninger, Gerald Bast, Maria Ziegelböck, Caroline Heider, Ines Méhu-Blantar, Evelyn Devuyst (editors). De Gruyter, 2019.