Dyfyniad APA

Schept. Progressive Punishment. NYU Press.

Dyfyniad Arddull Chicago

Schept. Progressive Punishment. NYU Press.

Dyfyniad MLA

Schept. Progressive Punishment. NYU Press.

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