APA (7th ed.) Citation

Gottlob, G., Koch, C., & Schulz, K. (2006). Conjunctive Queries over Trees.

Chicago Style (17th ed.) Citation

Gottlob, G., C. Koch, and K. Schulz. Conjunctive Queries over Trees. 2006.

MLA (9th ed.) Citation

Gottlob, G., et al. Conjunctive Queries over Trees. 2006.