General System Theory: Foundations, Development, Applications
Bertalanffy, L. von. 1968. General System Theory: Foundations, Development, Applications. Revised ed. New York, NY, USA: Braziller.
Overview of Systems (Knowledge Area)
This book is written by the originator of General Systems Theory. It lays out the rational for GST and defines the most important principles and concepts.
What is a System?
This reference provides the System Science definition of system.
General Systems Theory is the conceptual framework for Systems science, and this book is the definitive reference for GST.