APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.