Dyfyniad APA

The National elementary principal. (1957). Parents and the schools. s.n.

Dyfyniad Arddull Chicago

The National elementary principal. Parents and the Schools. [Washington]: s.n, 1957.

Dyfyniad MLA

The National elementary principal. Parents and the Schools. s.n, 1957.

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