Dyfyniad APA

Whipple, G. (1966). Upgrading elementary reading programs. International Reading Association.

Dyfyniad Arddull Chicago

Whipple, Gertrude. Upgrading Elementary Reading Programs. [Newark, Del: International Reading Association, 1966.

Dyfyniad MLA

Whipple, Gertrude. Upgrading Elementary Reading Programs. International Reading Association, 1966.

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