Fuzzy Logic & the Human Sciences

Zadehs' original paper on Fuzzy Logic was published in 1965 (Zadeh 1965). He
said of the reasons behind his publication:

"I felt that in the case of systems other than mechanistic systems, e.g.
biological systems, economic systems, and so on, we need something like that
[Fuzzy], because in the realm of such 'humanistic systems' - as I referred
to them at that time - there is much more complexity." (KI 2001)

Well I appear not to be able to find people who have worked with fuzzy in
the human science field. By this I mean sociology. Could anyone please give
me leads as to journal articles, papers, books that may cover this topic.
Even better would be to 'talk' to people who have worked or studied this
field of fuzzy.
Lionel Cox