Trappl, R. (1990). Cybernetics and systems '90. Singapore : World Scientific.
Chicago Style (17th ed.) CitationTrappl, Robert. Cybernetics and Systems '90. Singapore : World Scientific, 1990.
MLA (9th ed.) CitationTrappl, Robert. Cybernetics and Systems '90. Singapore : World Scientific, 1990.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.