Lester, P. M. (2011). Visual communication: Images with messages (5th ed.). Wadsworth.
Dyfyniad Arddull ChicagoLester, Paul Martin. Visual Communication: Images with Messages. 5th ed. Boston, Mass: Wadsworth, 2011.
Dyfyniad MLALester, Paul Martin. Visual Communication: Images with Messages. 5th ed. Wadsworth, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.