:Checkland Peter. (1999). Systems thinking, systems practice: Includes a 30-year retrospective. John Wiley.
Style de citation Chicago (17e éd.):Checkland Peter. Systems Thinking, Systems Practice: Includes a 30-year Retrospective. Chichester: John Wiley, 1999.
Style de citation MLA (9e éd.):Checkland Peter. Systems Thinking, Systems Practice: Includes a 30-year Retrospective. John Wiley, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.