Dyfyniad APA

Livingston, P., McCarty, C., & Taylor, H. (1997). Visual impairment and socioeconomic factors.

Dyfyniad Arddull Chicago

Livingston, P., C. McCarty, and H. Taylor. Visual Impairment and Socioeconomic Factors. 1997.

Dyfyniad MLA

Livingston, P., C. McCarty, and H. Taylor. Visual Impairment and Socioeconomic Factors. 1997.

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