Dyfyniad APA

American Association of School Adiminstrators. (1951). Health in schools. [s.n.].

Dyfyniad Arddull Chicago

American Association of School Adiminstrators. Health in Schools. Washington: [s.n.], 1951.

Dyfyniad MLA

American Association of School Adiminstrators. Health in Schools. [s.n.], 1951.

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