Dyfyniad APA

Kennedy, P. M. (1993). Preparing for the twenty-first century. Random House.

Dyfyniad Arddull Chicago

Kennedy, Paul M. Preparing for the Twenty-first Century. New York: Random House, 1993.

Dyfyniad MLA

Kennedy, Paul M. Preparing for the Twenty-first Century. Random House, 1993.

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