Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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