Source: General System Theory (1968), 2. The Meaning of General Systems Theory, p. 32
“No matter how abstractly formulated are a general theory of systems, a general theory of evolution and a general theory of communication, all three theoretical components are necessary for the specifically sociological theory of society. They are mutually interdependent.”
Luhmann (1982) The Differentiation of Society, Translated by Stephen Holmes and Charles Larmore. Columbia University Press, New York, 1982, pp. 261. Cited in: Loet Leydesdorff (2000) " Luhmann, Habermas, and the Theory of Communication http://www.leydesdorff.net/montreal.htm".
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Niklas Luhmann 12
German sociologist, administration expert, and social syste… 1927–1998Related quotes
Mesarovic (1964) cited in: Shatrughna P. Sinha (1991) Instant encyclopaedia of geography. 1. Introduction to geography. Mittal Publications, p. 467
Source: 1950s, General Systems Theory - The Skeleton of Science, 1956, p. 197: Opening sentences
Source: 1960s, Robots, Men and Minds (1967), p. 69

Source: "The origins and purposes of several traditions in systems theory and cybernetics," 1999, p. 80: About General Systems Theory

Source: Structure of American economy, 1919-1929, 1941, p. 33, as cited in: Drejer, Ina. " The Role of Technological Linkages in a Leontief Scheme-From Static Structures to Endogenous Evolution of Technical Coefficients http://www.druid.dk/uploads/tx_picturedb/dw1999-340.pdf." Preparado para: DRUID Winter Conference, Holte (enero 1999). 1998.

E. Laszlo et al. (1993) pp. xvii- xix; as cited in: Alexander Laszlo and Stanley Krippner (1992) " Systems Theories: Their Origins, Foundations, and Development http://archive.syntonyquest.org/elcTree/resourcesPDFs/SystemsTheory.pdf" In: J.S. Jordan (Ed.), Systems Theories and A Priori Aspects of Perception. Amsterdam: Elsevier Science, 1998. Ch. 3, pp. 47-74.