Dyfyniad APA

Ruth, L. C. (2000). Design standards for childrens environments. McGraw-Hill.

Dyfyniad Arddull Chicago

Ruth, Linda Cain. Design Standards for Childrens Environments. McGraw-Hill, 2000.

Dyfyniad MLA

Ruth, Linda Cain. Design Standards for Childrens Environments. McGraw-Hill, 2000.

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