Dyfyniad APA

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

Dyfyniad Arddull Chicago

Boulding, Kenneth Ewart. The World as a Total System. Beverly Hills, Calif: Sage, 1985.

Dyfyniad MLA

Boulding, Kenneth Ewart. The World as a Total System. Sage, 1985.

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