Cita APA (7a ed.)
Varis, L. (2011). Mastering exposure and the zone system for digital photographers. Course Technology PTR.
Cita Chicago Style (17a ed.)
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Boston, Mass., U.S.A.: Course Technology PTR, 2011.
Cita MLA (9a ed.)
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Course Technology PTR, 2011.
Precaución: Estas citas no son 100% exactas.