Jürgensen, H., Petrich, M., & Weinert, H. J. (1981). Semigroups: Proceedings of a conference held at Oberwolfach, Germany, December 16-21, 1978. Springer-Verlag.
Chicago Style (17th ed.) CitationJürgensen, Helmut, Mario Petrich, and Hanns Joachim Weinert. Semigroups: Proceedings of a Conference Held at Oberwolfach, Germany, December 16-21, 1978. Berlin ; New York: Springer-Verlag, 1981.
MLA (9th ed.) CitationJürgensen, Helmut, et al. Semigroups: Proceedings of a Conference Held at Oberwolfach, Germany, December 16-21, 1978. Springer-Verlag, 1981.
Warning: These citations may not always be 100% accurate.