SpringerLink (Online service), Kakas, A., & Sadri, F. (2002). Computational Logic: Logic Programming and Beyond: Essays in Honour of Robert A. Kowalski, Part I (1st ed. 2002.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-45628-7
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), A.C Kakas, και F. Sadri. Computational Logic: Logic Programming and Beyond: Essays in Honour of Robert A. Kowalski, Part I. 1st ed. 2002. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2002. https://doi.org/10.1007/3-540-45628-7.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Computational Logic: Logic Programming and Beyond: Essays in Honour of Robert A. Kowalski, Part I. 1st ed. 2002. Springer Berlin Heidelberg : Imprint: Springer, 2002. https://doi.org/10.1007/3-540-45628-7.
