APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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