एपीए उद्धरण

Director, S. W., & Rohrer, R. A. Introduction to Systems Theory. McGraw-Hill Kogakusha Ltd.

शिकागो स्टाइल उद्धरण

Director, Stephen W., और Ronald A. Rohrer. Introduction to Systems Theory. Tokyo: McGraw-Hill Kogakusha Ltd.

एमएलए उद्धरण

Director, Stephen W., और Ronald A. Rohrer. Introduction to Systems Theory. McGraw-Hill Kogakusha Ltd.