Wormell, I. (1987). Knowledge engineering: Expert systems and information retrieval. Taylor Graham.
Citazione stile Chigago Style (17a edizione)Wormell, Irene. Knowledge Engineering: Expert Systems and Information Retrieval. London [u.a.]: Taylor Graham, 1987.
Citatione MLA (8a ed.)Wormell, Irene. Knowledge Engineering: Expert Systems and Information Retrieval. Taylor Graham, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.