APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.