Cita APA (7a ed.)
Checklend, P. (1981). Systems Thinking, Systems Practice. Wiley.
Cita estilo Chicago (17a ed.)
Checklend, Peter. Systems Thinking, Systems Practice. Chichester, Inglaterra: Wiley, 1981.
Cita MLA (9a ed.)
Checklend, Peter. Systems Thinking, Systems Practice. Wiley, 1981.
Precaución: Estas citas no son 100% exactas.