APA-referens (7:e uppl.)

Gottlob, G., Leone, N., & Scarcello, F. (1997). On the Complexity of Some Inductive Logic Programming Problems. Springer.

Chicago-referens (17:e uppl.)

Gottlob, G., N. Leone, och F. Scarcello. On the Complexity of Some Inductive Logic Programming Problems. Springer, 1997.

MLA-referens (9:e uppl.)

Gottlob, G., et al. On the Complexity of Some Inductive Logic Programming Problems. Springer, 1997.