Style de citation APA (7e éd.)

Hofmann, K. H., Lawson, J. D., & Pym, J. S. (1990). The analytical and topological theory of semigroups: Trend and developments. W. de Gruyter.

Style de citation Chicago (17e éd.)

Hofmann, Karl Heinrich, Jimmie D. Lawson, et J. S. Pym. The Analytical and Topological Theory of Semigroups: Trend and Developments. Berlin ; New York: W. de Gruyter, 1990.

Style de citation MLA (8e éd.)

Hofmann, Karl Heinrich, et al. The Analytical and Topological Theory of Semigroups: Trend and Developments. W. de Gruyter, 1990.