Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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