Dyfyniad APA

Delury, G. E. (1983). World Encyclopedia of Political Systems. Longman.

Dyfyniad Arddull Chicago

Delury, George E. World Encyclopedia of Political Systems. Essex: Longman, 1983.

Dyfyniad MLA

Delury, George E. World Encyclopedia of Political Systems. Longman, 1983.

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