APA (7th ed.) Citation

Zimmermann, H. (1991). Fuzzy set theory and its applications (2nd, revised ed.). Kluwer Academic Publishers.

Chicago Style (17th ed.) Citation

Zimmermann, H.-J. Fuzzy Set Theory and Its Applications. 2nd, revised ed. Boston [etc.]: Kluwer Academic Publishers, 1991.

MLA (9th ed.) Citation

Zimmermann, H.-J. Fuzzy Set Theory and Its Applications. 2nd, revised ed. Kluwer Academic Publishers, 1991.