Citazione Stile APA (7a Edizione)

Churchman, C. W. (1968). The systems approach. Delta Book.

Citazione stile Chigago Style (17a edizione)

Churchman, C. West. The Systems Approach. [New York]: Delta Book, 1968.

Citatione MLA (9a ed.)

Churchman, C. West. The Systems Approach. Delta Book, 1968.