Dyfyniad APA

Pickering, G. W. (1967). The challenge to education. Watts.

Dyfyniad Arddull Chicago

Pickering, George White. The Challenge to Education. London: Watts, 1967.

Dyfyniad MLA

Pickering, George White. The Challenge to Education. Watts, 1967.

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