Gaya APA
Checkland, Peter. (2009).
Systems thinking, systems practice : includes a 30-year retrospective .
West Sussex, England:
John Wiley & Sons.
Gaya Chicago
Checkland, Peter.
Systems thinking, systems practice : includes a 30-year retrospective.
West Sussex, England:
John Wiley & Sons,
2009.
Text.
Gaya MLA
Checkland, Peter.
Systems thinking, systems practice : includes a 30-year retrospective.
West Sussex, England:
John Wiley & Sons,
2009.
Text.
Gaya Turabian
Checkland, Peter.
Systems thinking, systems practice : includes a 30-year retrospective.
West Sussex, England:
John Wiley & Sons,
2009.
Print.