Dyfyniad APA

Lotto, R. B., & Purves, D. (2000). An empirical explanation of color contrast. The National Academy of Sciences.

Dyfyniad Arddull Chicago

Lotto, R. Beau, and Dale Purves. An Empirical Explanation of Color Contrast. The National Academy of Sciences, 2000.

Dyfyniad MLA

Lotto, R. Beau, and Dale Purves. An Empirical Explanation of Color Contrast. The National Academy of Sciences, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.