Pensamiento de Sistemas, Practica de Sistemas / Systems Thinking, Systems PracticePeter Checkland · First published 2005Open the Tome
La metodologia de sistemas suaves en accion/ Soft Systems Methodology In ActionPeter Checkland, Jim Scholes · First published 2002Open the Tome
Information, systems, and information systemsPeter Checkland, Sue Holwell · First published 1997Open the Tome
