Dyfyniad APA

Patterson, T. C. (1999). Change and development in the twentieth century. Oxford: Berg.

Dyfyniad Arddull Chicago

Patterson, Thomas C. Change and Development in the Twentieth Century. Oxford: Berg, 1999.

Dyfyniad MLA

Patterson, Thomas C. Change and Development in the Twentieth Century. Oxford: Berg, 1999.

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