APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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