Citação norma APA

Billhardt, B., Giraldes, E., Smith, M. P. M., & Martins, P. M. (2013). Homomorphisms and congruences on regular semigroups with associate inverse subsemigroups.

Citação norma Chicago

Billhardt, B., E. Giraldes, M. Paula Marques Smith, and Paula Mendes Martins. Homomorphisms and Congruences on Regular Semigroups with Associate Inverse Subsemigroups. 2013.

Citação norma MLA

Billhardt, B., et al. Homomorphisms and Congruences on Regular Semigroups with Associate Inverse Subsemigroups. 2013.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.