APA (7th ed.) Citation

Hofmann, K. H., Lawson, J. D., & Pym, J. (2011). The analytical and topological theory of semigroups: Trends and developments (Originally published 1990.). De Gruyter. https://doi.org/10.1515/9783110856040

Chicago Style (17th ed.) Citation

Hofmann, Karl H., Jimmie D. Lawson, and John Pym. The Analytical and Topological Theory of Semigroups: Trends and Developments. Originally published 1990. Berlin: De Gruyter, 2011. https://doi.org/10.1515/9783110856040.

MLA (9th ed.) Citation

Hofmann, Karl H., et al. The Analytical and Topological Theory of Semigroups: Trends and Developments. Originally published 1990. De Gruyter, 2011. https://doi.org/10.1515/9783110856040.