Dyfyniad APA

Sheppard-Towner Act of 1921. Great Neck Publishing.

Dyfyniad Arddull Chicago

Sheppard-Towner Act of 1921. Great Neck Publishing.

Dyfyniad MLA

Sheppard-Towner Act of 1921. Great Neck Publishing.

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