APA Citatie

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

Chicago Style citaat

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

MLA citatie

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