Gottlob, G., Leone, N., & Veith, H. (1995). Second Order Logic and the Weak Exponential Hierarchies. Springer.
Cita Chicago (17th ed.)Gottlob, G., N. Leone, i H. Veith. Second Order Logic and the Weak Exponential Hierarchies. Springer, 1995.
Cita MLA (9th ed.)Gottlob, G., et al. Second Order Logic and the Weak Exponential Hierarchies. Springer, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.