Dyfyniad APA

Laszlo, E. (1973). The world system: Models, norms, applications. New York: George Braziller.

Dyfyniad Arddull Chicago

Laszlo, Ervin. The World System: Models, Norms, Applications. New York: George Braziller, 1973.

Dyfyniad MLA

Laszlo, Ervin. The World System: Models, Norms, Applications. New York: George Braziller, 1973.

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