Skyttner, L. (2005). General Systems Theory: Problems, perspectives, practice (Second Edition.). World Scientific Publishing co.
Chicago-čujuhus (17. p.)Skyttner, Lars. General Systems Theory: Problems, Perspectives, Practice. Second Edition. New Jersey: World Scientific Publishing co, 2005.
MLA-čujuhus (9. p.)Skyttner, Lars. General Systems Theory: Problems, Perspectives, Practice. Second Edition. World Scientific Publishing co, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.