APA aipamena

DIRECTOR, S. W. (1972). Introduction To Systems Theory Tephen W. Director. McGraw-Hill.

Chicago Style aipamena

DIRECTOR, Stephen W. Introduction To Systems Theory Tephen W. Director. McGraw-Hill, 1972.

MLA aipamena

DIRECTOR, Stephen W. Introduction To Systems Theory Tephen W. Director. McGraw-Hill, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.