Citazione Stile APA (7a Edizione)
Varis, L. (2011). Mastering exposure and the zone system for digital photographers. Course Technology PTR.
Citazione stile Chigago Style (17a edizione)
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Boston, Mass., U.S.A.: Course Technology PTR, 2011.
Citatione MLA (9a ed.)
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Course Technology PTR, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.