Dyfyniad APA

(1992). Survey of Parents and Children, 1990 [United States] / National Commission on Children. [electronic resource].

Dyfyniad Arddull Chicago

Survey of Parents and Children, 1990 [United States] / National Commission on Children. [electronic Resource]. 1992.

Dyfyniad MLA

Survey of Parents and Children, 1990 [United States] / National Commission on Children. [electronic Resource]. 1992.

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