Cita APA (7th ed.)

Gottlob, G., Kappel, G., & Schrefl, M. (1995). The Evolving Algebra Semantics of Class and Role Hierarchies. Springer.

Cita Chicago (17th ed.)

Gottlob, G., G. Kappel, i M. Schrefl. The Evolving Algebra Semantics of Class and Role Hierarchies. Springer, 1995.

Cita MLA (9th ed.)

Gottlob, G., et al. The Evolving Algebra Semantics of Class and Role Hierarchies. Springer, 1995.