Johnson, C. (2017). The practical zone system for film and digital photography: Classic tool, universal applications (Sixth edition.). Routledge.
Chicago-Zitierstil (17. Ausg.)Johnson, Chris. The Practical Zone System for Film and Digital Photography: Classic Tool, Universal Applications. Sixth edition. New York: Routledge, 2017.
MLA-Zitierstil (9. Ausg.)Johnson, Chris. The Practical Zone System for Film and Digital Photography: Classic Tool, Universal Applications. Sixth edition. Routledge, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.