APA (7th ed.) Citation

International Conference on Logic Programming Lissabon. (1991). Selected papers of the 6th International Conference on Logic Programming <ICLP 89>: Lisboa, Portugal, June 1989. Elsevier.

Chicago Style (17th ed.) Citation

International Conference on Logic Programming Lissabon. Selected Papers of the 6th International Conference on Logic Programming <ICLP 89>: Lisboa, Portugal, June 1989. Amsterdam [u.a.]: Elsevier, 1991.

MLA (9th ed.) Citation

International Conference on Logic Programming Lissabon. Selected Papers of the 6th International Conference on Logic Programming <ICLP 89>: Lisboa, Portugal, June 1989. Elsevier, 1991.