Wong, W. (1972). Principles of two-dimensional design. New York: John Wiley & Sons.
Dyfyniad Arddull ChicagoWong, Wucius. Principles of Two-dimensional Design. New York: John Wiley & Sons, 1972.
Dyfyniad MLAWong, Wucius. Principles of Two-dimensional Design. New York: John Wiley & Sons, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.