Dyfyniad APA
Varis, L. (2011). Mastering exposure and the zone system for digital photographers. Course Technology PTR.
Dyfyniad Arddull Chicago
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Boston, Mass., U.S.A.: Course Technology PTR, 2011.
Dyfyniad MLA
Varis, Lee. Mastering Exposure and the Zone System for Digital Photographers. Course Technology PTR, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.