Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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