Formby, J. (1965). An introduction to the mathematical formulation of self-organizing systems. N.J., Van Nostrand.
Lua i Stíl Chicago (17ú heag.)Formby, John. An Introduction to the Mathematical Formulation of Self-organizing Systems. Princeton: N.J., Van Nostrand, 1965.
Lua MLA (9ú heag.)Formby, John. An Introduction to the Mathematical Formulation of Self-organizing Systems. N.J., Van Nostrand, 1965.
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