Dyfyniad APA

Boulding, K. E. (1985). The world as a total system. London: Sage Publications.

Dyfyniad Arddull Chicago

Boulding, Kenneth E. The World As a Total System. London: Sage Publications, 1985.

Dyfyniad MLA

Boulding, Kenneth E. The World As a Total System. London: Sage Publications, 1985.

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