Dyfyniad APA

Derbyshire, J. D., & Derbyshire, I. (1989). Chambers political systems of the world. Chambers.

Dyfyniad Arddull Chicago

Derbyshire, J. Denis, and Ian Derbyshire. Chambers Political Systems of the World. Edinburgh: Chambers, 1989.

Dyfyniad MLA

Derbyshire, J. Denis, and Ian Derbyshire. Chambers Political Systems of the World. Chambers, 1989.

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