Cita APA (7th ed.)

Gottlob, G., Kolaitis, P., & Schwentick, T. (2000). Existential Second−Order Logic over Graphs: Charting the Tractability Frontier.

Cita Chicago (17th ed.)

Gottlob, G., P. Kolaitis, i T. Schwentick. Existential Second−Order Logic over Graphs: Charting the Tractability Frontier. 2000.

Cita MLA (9th ed.)

Gottlob, G., et al. Existential Second−Order Logic over Graphs: Charting the Tractability Frontier. 2000.