Cita APA (7a ed.)

Gomes, G. M. S., Pin, J. E., & Silva, P. V. (2002). Semigroups, algorithms, automata, and languages: Coimbra, Portugal, May-July 2001. World Scientific.

Cita Chicago Style (17a ed.)

Gomes, Gracinda M. S., Jean Eric Pin, y Pedro V. Silva. Semigroups, Algorithms, Automata, and Languages: Coimbra, Portugal, May-July 2001. River Edge, NJ: World Scientific, 2002.

Cita MLA (8a ed.)

Gomes, Gracinda M. S., et al. Semigroups, Algorithms, Automata, and Languages: Coimbra, Portugal, May-July 2001. World Scientific, 2002.